K. Yoshino, M. Fujiwara, A. Tanaka, S. Takahashi, Y. Nambu, A. Tomita, S. Miki, T. Yamashita, Z. Wang, M. Sasaki, and A. Tajima,
"High-speed wavelength-division multiplexing quantum key distribution system,"
Opt. Lett. 37(2), pp. 223--225 (2012).

Y. Nambu, S. Takahashi, K. Yoshino, A. Tanaka, M. Fujiwara, M. Sasaki, A. Tajima, S. Yorozu, and A. Tomita,
"Efficient and low-noise single-photon avalanche photodiode for 1.244-GHz clocked quantum key distribution,"
Opt. Express. 19(21), pp 20531--20541 (2011).

M. Fujiwara, A. Tanaka, S. Takahashi, K. Yoshino, Y. Nambu, A. Tajima, S. Miki, T. Yamashita, Z. Wang, A. Tomita, and M. Sasaki,
"Afterpulse-like phenomenon of superconducting single photon detector in high speed quantum key distribution system,"
Opt. Express. 19(20), pp 19562--19571 (2011).

M. Toyoshima, H. Takenaka, Y. Shoji, Y. Takayama, M. Takeoka, M. Fujiwara, and M. Sasaki,
"Polarization-Basis Tracking Scheme in Satellite Quantum Key Distribution,"
Int. J. Opt. 2011, pp. 1--8 (2011).

M. Sasaki, M. Fujiwara, H. Ishizuka, W. Klaus, K. Wakui, M. Takeoka, S. Miki, T. Yamashita, Z. Wang, A. Tanaka, K. Yoshino, Y. Nambu, S. Takahashi, A. Tajima, A. Tomita, T. Domeki, T. Hasegawa, Y. Sakai, H. Kobayashi, T. Asai, K. Shimizu, T. Tokura, T. Tsurumaru, M. Matsui, T. Honjo, K. Tamaki, H. Takesue, Y. Tokura, J. F. Dynes, A. R. Dixon, A. W. Sharpe, Z. L. Yuan, A. J. Shields, S. Uchikoga, M. Legré, S. Robyr, P. Trinkler, L. Monat, J.-B. Page, G. Ribordy, A. Poppe, A. Allacher, O. Maurhart, T. Länger, M. Peev, and A. Zeilinger,
"Field test of quantum key distribution in the Tokyo QKD Network,"
Opt. Express 19(11), pp. 10387--10409 (2011).

Y. Eto, A. Koshio, A. Ohshiro, J. Sakurai, K. Horie, T. Hirano, and M. Sasaki,
"Efficient homodyne measurement of picosecond squeezed pulses with pulse shaping technique,"
Opt. Lett. 36 (23), pp. 4653--4655 (2011).

J. N- Nielsen, M. Takeuchi, K. Wakui, H. Takahashi, K. Hayasaka, M. Takeoka, M. Sasaki,
"Photon subtraction from traveling fields - recent experimental applications,"
Progress in Informatics 8, pp. 5--18 (2011).

M. Takeoka, J. N-Nielsen, M. Takeuchi, K. Wakui, H. Takahashi, K. Hayasaka, M. Sasaki,
"Engineering of optical continuous-variable qubits via displaced photonsubtraction: multimode analysis,"
J. Mod. Opt. 58(3), pp. 266--275 (2011).

J. Neergaard-Nielsen, M. Takeuchi, K. Wakui, H. Takahashi, K. Hayasaka, M. Takeoka, M. Sasaki,
"Bridging discrete and continuous variables in quantum information,"
Opt. Photo. News. 21(12), pp 46 (2010).

J. Neergaard-Nielsen, M. Takeuchi, K. Wakui, H. Takahashi, K. Hayasaka, M. Takeoka, M.Sasaki,
"Optical continuous-variable qubit,"
Phys. Rev. Lett. 105, pp 053602/1--4 (2010).

H. Takahashi, J. S. Neergaard-Nielsen, M. Takeuchi, M. Takeoka, K. Hahasaka, A. Furusawa, M. Sasaki,
"Entanglement distillation from Gaussian input states,"
Nat. Photonics 4, pp. 178--181 (2010).

M. Toyoshima, Y. Shoji, C. A. Schäfer, Y. Takayama, H. Kunimori, M. Takeoka,M. Fujiwara, M. Sasaki,
"Comparison of free-space and fiber-based transmission systems in quantum cryptography,"
Trans. JSASS Space Tech. Japan 7, pp. 7 (2009).

H. Takahashi, K. Wakui, S. Suzuki, M. Takeoka, K. Hayasaka, A. Furusawa, M. Sasaki,
"Generation of large-amplitude coherent-state superposition via ancilla-assisted photon-subtraction,"
Phys. Rev. Lett. 101, pp. 233605/1--4 (2008).

H. Takahashi, K. Wakui, S. Suzuki, M. Takeoka, K. Hayasaka, A. Furusawa, M. Sasaki,
"Generation of large-amplitude coherent-state superposition via ancilla-assisted photon-subtraction,"
Phys. Rev. Lett. 101, pp 233605/1--4 (2008).

A. Tanaka, M. Fujiwara, S. W. Nam, Y. Nambu, S. Takahashi, W. Maeda, K. Yoshino, S. Miki, B. Baek, Z. Wang, A. Tajima, M. Sasaki, and A. Tomita,
"Ultra fast quantum key distribution over a 97 km installed telecom fiber with wavelength division multiplexing clock synchronization,"
Opt. Express 16 (15), pp 11354--11360 (2008).

M. Sasaki, K. Wakui, H. Takahashi, A. Furusawa, M. Fujiwara, K. Tsujino, M. Akiba and S. Suzuki,
"Control of optical continuous variable systems using photon counting and feedforward,"
Proc. of The 8th International Conference on Quantum Communication, Measurement and Computing(QCMC2006), Tsukuba, Japan pp 469--474 (2007).

Y. Zhang, K. Hayasaka, and K. Kasai,
"Efficient noise suppression of an amplified diode-laser by optical filtering and resonant optical feedback,"
Appl. Phys. B 86 (4), pp 643--646 (2007).

K. Wakui, H. Takahashi, A. Furusawa, and M. Sasaki,
"Photon subtracted squeezed states generated with periodically poled KTiOPO4,"
Opt. Express 15 (6), pp 3568--3574 (2007).

A. Tada, K. Hirosawa, F. Kannari, M. Takeoka, and M. Sasaki,
"Photon-number squeezing in a soliton-like Raman Stokes component during propagation of ultrashort pulses in a microstructure fiber,"
J. Opt. Soc. Am. B 24 (3), pp. 691--698 (2007).

Y. Zhang, K. Hayasaka, and K. Kasai,
"Generation of two-mode bright squeezed light using a noise-suppressed amplified diode laser,"
Opt. Express 14 (26), pp 13083--13088 (2006).

Y. Zhang, K. Hayasaka, and K. Kasai,
"Conditional generation of twin sub-Poissonian beams via post-selection,"
Int. J. Mod. Phys. B 20 (11-13), pp 1564--1569 (2006).

Y. Zhang, K. Hayasaka, and K. Kasai,
"Realization of quantum correlation transfer between twin beams by conditional preparation technique,"
Opt. Commun. 266 (2), pp 598--603 (2006).

S. Suzuki, H. Yonezawa, F. Kannari, M. Sasaki, and A. Furusawa,
"7 dB quadrature squeezing at 860 nm with periodically poled KTiOPO4, "
Appl. Phys. Lett. 89, pp 061116/1--3 (2006).

N. Takei, T. Aoki, S. Koike, K. Yoshino, K. Wakui, H. Yonezawa, T. Hiraoka, J. Mizuno, M. Takeoka, M. Ban, and A. Furusawa,
"Experimental demonstration of quantum teleportation of a squeezed state,"
Phys. Rev. A 72, pp 042304/1--7 (2005).

Y. Zhang, K. Hayasaka, and K. Kasai,
"Conditional transfer of quantum correlation in the intensity of twin beams,"
Phys. Rev. A 71, pp 062341 (2005).

Y. Zhang, K. Hayasaka, and K. Kasai,
"Experimental characterization of quantum-correlated twin beams and quantum channel with twin beams,"
Opt. Spectrosc. 99, pp 181 (2005).

K. Hirosawa, H. Furumochi, A. Tada, F. Kannari, M. Takeoka, and M. Sasaki,
"Photon number squeezing of ultrabroadband laser pulses generated by microstructure fibers,"
Phys. Rev. Lett. 94, pp 203601/1--4 (2005).

J. Mizuno, K. Wakui, A. Furusawa, and M. Sasaki,
"Experimental demonstration of entanglement-assisted coding using a two mode squeezed vacuum state,"
Phys. Rev. A 71, pp 012304/1--4 (2005).

Y. Zhang, K. Kasai, and K. Hayasaka,
"Single-beam noise characteristics of quantum-correlated twin beams,"
J. Opt. Soc. Am. B 21(5), pp 1044 (2004).

M. Sasaki, K. Wakui, J. Mizuno, M. Fujiwara, and M. Akiba,
"EPR beams and photon number detector: toward synthesizing optical nonlinearity,"
Quantum Communication, Measurement and Computing, pp 44--47(American Institute of Physics 2004).

K. Hayasaka, Y. Zhang, and K. Kasai,
"Generation of twin beams from an optical parametric oscillator pumped by a frequency-doubled diode laser,"
Opt. Lett. 29 (14), pp 1665 (2004).

K. Hayasaka, Y. Zhang, and K. Kasai,
"Generation of 22.8 mW single-frequency green light by frequency doubling of a 50-mW diode laser,"
Opt. Express 12 (15), pp 3567 (2004).

Y. Zhang, K. Kasai, and K. Hayasaka,
"Quantum channel using photon number correlated twin beams,"
Opt. Express 11 (26), pp 3592 (2003).

Y. Zhang, K. Kasai, and M.Watanabe,
"Experimental investigation of the intensity fluctuation joint probability and conditional distributions of the twin-beam quantum state,"
Opt. Express 11 (1), pp 14 (2003).

Y. Zhang, K. Kasai, and M. Watanabe,
"Investigation of the photon-number statistics of twin beams by direct detection,"
Opt. Lett. 27, pp 1244 (2002).

Y. Zhang, K. Kasai, and M. Watanabe,
"Classical and quantum properties of optical parametric amplifier/deamplifier,"
Phys. Lett. A 297, pp 29 (2002).

Y. Zhang, J. Ishikawa, and F. L. Hong
"Accurate frequency atlas of molecular iodine near 532 nm measured by an optical frequency comb generator,"
Opt. Commun. 200, pp 209 (2001).

Yamaguchi, J. Kato, S. Ohta, and J. Mizuno,
"Image formation in phase-shifting digital holography and applications to microscopy,"
Appl. Opt. 40 (34), pp 6177--6186 (2001).

A. Waseda, M. Sasaki, M. Takeoka, M. Fujiwara, M. Toyoshima, and A. Assalini,
"Numerical Evaluation of PPM for Deep-Space Links,"
J. Opt. Commun. Netw. 3(6), pp. 514--521 (2011).

K. Tsujino, D. Fukuda, G. Fujii, S. Inoue, M. Fujiwara, M. Takeoka, and M. Sasaki,
"Quantum Receiver beyond the Standard Quantum Limit of Coherent Optical Communication,"
Phys. Rev. Lett. 106(25), pp 250503/1--4 (2011).

C. Wittmann, U. L. Andersen, D. Sych, G. Leuchs, M. Takeoka,
"Discrimination of binary coherent states using a homodyne detector and a photon number resolving detector,"
Phys. Rev. A 81(6), pp 062338/1--11 (2010).

K. Tsujino, D. Fukuda, G. Fujii, S. Inoue, M. Fujiwara, M.Takeoka, M. Sasaki,
"Sub-shot-noise-limit discrimination of on-off keyed coherent signals via a quantum receiver with a superconducting transition edge sensor,"
Opt. Express. 18(8), pp 8107--8114 (2010).

C. Wittmann, U. L. Andersen, M. Takeoka, D. Sych, and, G. Leuchs,
"Demonstration of Coherent-State Discrimination Using a Displacement-Controlled Photon-Number-Resolving Detector,"
Phys. Rev. Lett. 104, pp. 100505/1--4 (2010).

C. Wittmann, M. Takeoka, K. N. Cassemiro, M. Sasaki, G. Leuchs, U. L. Andersen,
"Demonstration of near-optimal discrimination of optical coherent states,"
Phys. Rev. Lett. 101, pp 210501/1--4 (2008).

M. Sasaki,
"Toward implementation of coding for quantum sources and channels,"
Quantum Information, Statistics, Probability, pp 130--143 (Rinton Press 2004).

M. Takeoka, M. Fujiwara, J. Mizuno, and M. Sasaki,
"Implementation of generalized quantum measurements: Superadditive quantum coding, accessible information extraction, and classical capacity limit,"
Phys. Rev. A 69, pp 052329/1--14 (2004).

J. A. Vaccaro, Y. Mitsumori, S. M. Barnett, E. Andersson, A. Hasegawa, M. Takeoka, and M.Sasaki,
"Quantum data compression,"
Lecture Notes in Computer Science 2827, pp 98--107 (2003).

Y. Mitsumori, J. Vaccaro, S. M. Barnett, E. Andersson, A. Hasegawa, M. Takeoka, and M. Sasaki,
"Experimental demonstration of quantum source coding,"
Phys. Rev. Lett. 91, pp 217902/1--4 (2003).

M. Fujiwara, M. Takeoka, J. Mizuno and M. Sasaki,
"Exceeding classical capacity limit in quantum optical channel,"
Phys. Rev. Lett. 90, pp 167906/1--4 (2003).

M. Sasaki, M. Fujiwara, M. Takeoka, and J. Mizuno,
"Quantum decoder for single photon communication,"
Quantum Communication, Measurement and Computing, pp.185--188, ed. J.H. Shapiro and O. Hirota, (Rinton Press, New Jersey, 2003).

M. Sasaki, J. Mizuno, and M. Fujiwara,
"Quantum detection circuit for quantum channel coding,"
J. Commun. Res. Lab. 49 (1), pp 105--118 (2002).

J. Mizuno, M. Fujiwara, M. Akiba, T. Kawanishi, S. M. Barnett, and M. Sasaki,
"Optimum detection for extracting maximum information from symmetric qubit sets,"
Phys. Rev. A 65, pp 012315/1--10 (2001).

R. B. M. Clarke, V. M. Kendon, A. Chefles, S. M. Barnett, E. Riis, and M. Sasaki,
"Experimental realization of optimal detection strategies for overcomplete states,"
Phys. Rev. A 64, pp 012303/1--13 (2001).

S. M. Barnett, R. B. M. Clarke, V. M. Kendon, E. Riis, A. Chefles, and M. Sasaki,
"Experimental quantum state discrimination, "
Quantum Communication, Computing, and Measurement 3, pp 59--67, ed. P. Tombesi and O. Hirota (Kluwer academic/Plenum publishers, New York 2001).

M. Takeoka and M. Sasaki,
"Discrimination of the binary coherent signal: Gaussian-operation limit and simple non-Gaussian near-optimal receivers,"
Phys. Rev. A 78 pp 022320/1--7, (2008).

M. Takeoka, H. Takahashi, and M. Sasaki,
"Large-amplitude coherent-state superposition generated　by　a time-separated two-photon subtraction from a continuous-wave squeezed vacuum,"
Phys. Rev. A 77 pp 062315/1--9 (2008).

M. Sasaki, M. Takeoka, H. Takahashi,
"Temporally multiplexed superposition states of continuous variables,"
Physical Review A 77, pp 063840/1--11 (2008).

A. Kitagawa, M. Takeoka, M. Sasaki, and A. Chefles,
"Entanglement evaluation of non-Gaussian states generated by photon subtraction from squeezed states,"
Proc. of The 8th International Conference on Quantum Communication, Measurement and Computing(QCMC2006), Japan, pp 509--512 (2007).

K. Hirosawa, F. Kannari, M. Takeoka and M. Sasaki,
"Quantum correlated pulse-pair generation during pulse-trapping propagation in optical fibers,"
Phys. Rev. A 76 (4), pp 043817 /1--5 (2007).

M. Takeoka, M. Sasaki, and N. Luetkenhaus,
"Implementing projective measurements with linear optics,"
Proc. of The 8th International Conference on Quantum Communication, Measurement and Computing(QCMC2006), Japan, pp 413--416 (2007).

M. Takeoka, and M. Sasaki,
"Conditional generation of an arbitrary superposition of coherent states,"
Phys. Rev. A 75, pp 064302 /1--4 (2007).

M. Takeoka,
"Projective measurements via linear optics and photon detectors ,"
Opt. Spectrosc. 103 (1), pp 98--106 (2007).

M. Takeoka, M. Sasaki, and N. Luetkenhaus,
"Binary projective measurement via linear optics and photon counting,"
Phys. Rev. Lett. 97, pp 040502/1--4 (2006).

A. Kitagawa, M. Takeoka, M. Sasaki, and A. Chefles,
"Entanglement evaluation of non-Gaussian states generated by photon subtraction from squeezed states,"
Phys. Rev. A 73, pp 042310/1--12 (2006).

S. Suzuki, M. Takeoka, M. Sasaki, U. L. Andersen, and F. Kannari,
"Practical purification scheme for decohered coherent-state superpositions via partial homodyne detection,"
Phys. Rev. A 73, pp 042304/1--7 (2006).

M. Sasaki and S. Suzuki,
"Multimode theory of measurement-induced non-Gaussian operation on wideband squeezed light,"
Phys. Rev. A 73, pp 043807/1--18 (2006).

S. Suzuki, K. Tsujino, F. Kannari, and M. Sasaki,
"Analysis on generation schemes of Schroedinger cat-like states under experimental imperfections,"
Opt. Commun. 259 (2), pp 758--764 (2006).

A. Kitagawa, M. Takeoka, K. Wakui, and M. Sasaki,
"Effective squeezing enhancement via measurement-induced non-Gaussian operation and its application to the dense coding scheme,"
Phys. Rev. A 72, pp 022334/1--13 (2005).

M. Takeoka,
"Discrimination of quantum states with linear optics and continuous photon counting,"
Opt. Spectrosc. 99 (3), pp 418--424 (2005).

M. Takeoka, M. Sasaki, P. van Loock, and N. Luetkenhaus,
"Implementation of projective measurements with linear optics and continuous photon counting,"
Phys. Rev. A 71, pp 022318/1--10 (2005).

A. Kitagawa, and K. Yamamoto,
"Analysis for practical realization of number-state manipulation by number-sum Bell measurement with linear optics,"
Phys. Rev. A 70, pp 052311/1--13 (2004).

M. Takeoka, M. Sasaki, P. van Loock, and N. Nuetkenhaus,
"Quantum state discrimination with linear optics and continuous measurement,"
Quantum Communication, Measurement and Computing, pp 67--70(American Institute of Physics 2004).

D. Fujishima, F. Kannari, M. Takeoka, and M. Sasaki,
"Generation of entanglement between frequency bands via a nonlinear fiber propagation and a spectral pulse shaping,"
Opt. Lett. 28 (4), pp 275--277 (2003).

M. Takeoka and M. Sasaki,
"Two-frequency-mode entanglement generation inside an optical pulse by a nonlinear fiber and spectral pulse shaping,"
Quantum Communication, Measurement and Computing, pp.103--106, ed. J.H. Shapiro and O. Hirota, (Rinton Press, New Jersey, 2003).

M. Takeoka, M. Sasaki, and M. Ban,
"Continuous variable teleportation as a quantum channel,"
Opt. Spectrosc. 94 (5), pp 734--742 (2003).

M. Takeoka, M. Ban, and M. Sasaki,
"Continuous variable teleportation of non-classical states in noisy environment,"
J. Commun. Res. Lab. 49 (1), pp 119--127 (2002).

M. Ban, M. Sasaki, and M. Takeoka,
"Continuous variable teleportation as a generalized thermalizing quantumchannel,"
J. Phys. A: Math. Gen. 35 (28), pp L401--L405 (2002).

M. Takeoka, M. Ban, and M. Sasaki,
"Quantum channel of continuous variable teleportation and nonclassicality of quantum states,"
J. Opt. B: Quantum Semiclass. 4, pp 114--122 (2002).

M. Takeoka, D. Fujishima, and F. Kannari,
"Optimization of ultrashort-pulse squeezing by spectral filtering with the Fourier pulse-shaping technique,"
Opt. Lett. 26 (20), pp 1592--1594 (2001).

T.- S. Han,
"Multicasting Multiple Correlated Sources to Multiple Sinks Over a Noisy Channel Network,"
IEEE Trans. Information Theory 57(1), pp. 4--13 (2011).

Y. Yoshida, M. Takeoka, and M. Sasaki,
"Invariance of the bit error rate in the ancilla-assisted homodyne detection,"
Phys. Rev. A 82(5), pp. 052303/1--4 (2010).

M. Takeoka, K. Tsujino, and M. Sasaki,
"Cut-off rate analysis of practical quantum receivers,"
J. Mod. Opt. 57(3), pp. 207--212 (2010).

A. Waseda, M. Takeoka, M. Sasaki, M. Fujiwara, H. Tanaka,
"Quantum detection of wavelength-division-multiplexing optical coherent signals,"
J. Opt. Soc. Am. B 27(2), pp. 259--265 (2010).

A. Chefles, A. Kitagawa, M. Takeoka, M. Sasaki, J. Twamley,
"Unambiguous discrimination among oracle operators,"
J. Phys. A: Math. & Theor. 40, pp 10183--10213 (2007).

K. Nagata, W. Laskowski, and T. Paterek,
"Bell inequality with an arbitrary number of settings and its applications,"
Phys. Rev. A 74, pp 062109 /1--8 (2006).

K. Nagata,
"Comment on "All quantum observables in a hidden-variable model must commute simultaneously","
Phys. Rev. A 73, pp 066101/1--3 (2006).

A. Carlini and M. Sasaki,
"Template matching of mixed quantum state,"
Physica E 29, pp 716--719 (2005).

K. Nagata,
"Inequalities for experimental tests of the Kochen-Specker theorem,"
J. Math. Phys. 46, pp 102101/1--20 (2005).

K. Nagata,
"Kochen-Specker theorem as a precondition for secure quantum key distribution,"
Phys. Rev. A 72, pp 012325/1--4 (2005).

K. Nagata, W. Laskowski, M. Wiesniak, and M. Zukowski,
"Rotational invariance as an additional constraint on local realism,"
Phys. Rev. Lett. 93, pp 230403/1--4 (2004).

A. Carlini and M. Sasaki,
"Geometrical conditions for completely positive trace-preserving maps and their application to a quantum repeater and a state-dependent quantum cloning machine,"
Phys. Rev. A 68, pp 042327/1--10 (2003).

C. A. Fuchs and M. Sasaki,
"Squeezing quantum information through a classical channel: Measuring the "quantumness" of a set of quantum states,"
Quantum Inf. and Comput. 3 (5), pp 377--404 (2003).

C. A. Fuchs and M. Sasaki,
"The quantumness of a set of quantum states,"
Quantum Communication, Measurement and Computing, pp.475--480, ed. J.H. Shapiro and O. Hirota, (Rinton Press, New Jersey, 2003).

M. Sasaki and A. Carlini,
"Quantum learning and universal quantum matching,"
Quantum Communication, Measurement and Computing, pp.315--318, ed. J.H. Shapiro and O. Hirota, (Rinton Press, New Jersey, 2003).

M. Takeoka M. Ban, and M. Sasaki,
"Unambiguous quantum-state filtering,"
Phys. Rev. A 68, pp 012307/1--7 (2003).

M. Takeoka M. Ban, and M. Sasaki,
"Practical scheme for the optimal measurement in quantum interferometric devices,"
Phys. Lett. A 313 (1-2), pp 16--20 (2003).

A. Chefles and M. Sasaki,
"Retrodiction of generalized measurement outcomes,"
Phys. Rev. A 67, pp 032112/1--12 (2003).

M. Sasaki, M. Ban, and S. M. Barnett,
"Optimal parameter estimation of a depolarizing channel,"
Phys. Rev. A 66, pp 022308/1--8 (2002).

M. Sasaki and A. Carlini,
"Quantum learning and universal quantum matching machine,"
Phys. Rev. A 66, pp 022303/1--10 (2002).

M. Sasaki, A. Carlini, and R. Jozsa,
"Quantum template matching,"
Phys. Rev. A 64, pp 022317/1--11 (2001).

M. Sasaki, A. Carlini, and A. Chefles,
"Optimal phase estimation and square root measurement,"
J. Phys. A: Math. Gen. 34, pp 7017--7027 (2001).

S. M. Barnett, C. R. Gilson, and M. Sasaki,
"Fidelity and the communication of quantum information,"
J. Phys. A: Math. Gen. 34, pp 6755--6766 (2001).

M. Sasaki and A. Carlini,
"Quantum state recognition,"
Quantum Communication, Computing, and Measurement 3, pp 31--34, ed. P. Tombesi and O. Hirota (Kluwer academic/Plenum publishers, New York 2001).

O. Hirota, M. Osaki, and M. Sasaki,
"Entangled state based on nonorthogonal state,"
Quantum Communication, Computing, and Measurement 3, pp 359--366, ed. P. Tombesi and O. Hirota (Kluwer academic/Plenum publishers, New York 2001).

Y. Hibi, H. Matsuo, H. Nagata, H. Ikeda, and M. Fujiwara,
"The Cryogenic Multi-Channel Readout System for Submillimeter/Terahertz Cameras,"
J. Low Temp. Phys., 10.1007/s(10909-012-0595-6), pp. 1--5 (2012).

T. Yamashita, S. Miki, K. Makise, W. Qiu, H. Terai, M. Fujiwara, M. Sasaki, and Z. Wang,
"Origin of intrinsic dark count in superconducting nanowire single-photon detectors,"
Appl. Phys. Lett. 99(16), pp. 161105/1--3 (2011).

T. Yamashita, S. Miki, W. Qiu, M. Fujiwara, M. Sasaki and Z. Wang,
"Performances of Fiber-Coupled Superconducting Nanowire Single-Photon Detectors Measured at Ultralow Temperature,"
IEEE Trans.Appl.Supercond. 21(3), pp. 336--339(2011).

S. Miki, T. Yamashita, M. Fujiwara, M. Sasaki and Z. Wang,
"Characterization of Coupling Efficiency and Absorption Coefficient for Fiber-Coupled SNSPD With an Optical Cavity,"
IEEE Trans.Appl.Supercond. 21(3), pp. 332--335(2011).

S. Miki, H. Terai, T. Yamashita, K. Makise, M. Fujiwara, M. Sasaki, and Z. Wang,
"Superconducting single photon detectors integrated with single flux quantum readout circuits in a cryocooler,"
Appl. Phys. Lett. 99, pp. 111108/1--3 (2011).

P. J Clarke, R. J Collins, P. A Hiskett, M.-J. García-Martínez, N. J Krichel, A. McCarthy, M. G Tanner, J. A O’Connor, C. M Natarajan, S. Miki, M. Sasaki, Z. Wang, M. Fujiwara, I. Rech, M. Ghioni, A. Gulinatti, R. H Hadfield, P. D Townsend and G. S Buller,
"Analysis of detector performance in a gigahertz clock rate quantum key distribution system,"
New J. Phys. 13(7), pp. 075008/1--23 (2011).

T.Yamashita, S.Miki, W.Qiu, M.Fujiwara, M.Sasaki, and Z.Wang,
"Performances of Fiber-Coupled Superconducting Nanowire Single-Photon Detectors Measured at Ultralow Temperature,"
IEEE Trans.Appl.Supercond.21(3), pp. 336--339 (2011).

S.Miki, T.Yamashita, M.Fujiwara, M.Sasaki, and Z.Wang,
"Characterization of Coupling Efficiency and Absorption Coefficient for Fiber-Coupled SNSPD With an Optical Cavity,"
IEEE Trans.Appl.Supercond.21(3), pp. 332--335 (2011).

S. Miki, T. Yamashita, M. Fujiwara, M. Sasaki, and Z. Wang,
"Enhancing Detection Efficiency by Applying an Optical Cavity Structure in a Superconducting Nanowire Single-Photon Detector,"
IEICE TRANS. ELECTRON. E94-C(3), pp 260--265 (2011).

M. Fujiwara, S. Miki, T. Yamashita, Z. Wang, M. Sasaki,
"Photon level crosstalk between parallel fibers installed in urban area,"
Opt. Express. 18(21), pp 22199 --22207 (2010).

T. Yamashita, S. Miki, W. Qiu, M. Fujiwara, M. Sasaki, Z. Wang,
"Temperature dependent performances of superconducting nanowire single-photon detectors in an ultralow-temperature region,"
Appl. Phys. Express 3(10), pp 102502/1--3 (2010).

S. Miki, T. Yamashita, M. Fujiwara, M. Sasaki, Z. Wang,
"Multichannel SNSPD system with high detection efficiency at telecommunication wavelength,"
Opt. Lett. 35 (13), pp 2133--2135 (2010).

C. M. Natarajan, A. Peruzzo, S. Miki, M. Sasaki, Z. Wang, B. Baek, S. Nam, R. H. Hadfield, J. L. O’Brien,
"Operating quantum waveguide circuits with superconducting single-photon detectors,"
Appl. Phys. Lett. 96(21), pp 211101/1--3 (2010).

M. Akiba, K. Tsujino, M. Sasaki,
"Ultrahigh-sensitivity single-photon detection with linear-mode silicon avalanche photodiode,"
Opt. Lett. 35(15), pp 2621--2623 (2010).

Y. Hibi, H. Matsuo, H. Nagata, H. Ikeda, M. Fujiwara,
"The Cryogenic Digital Readout Module with GaAs JFET Ics,"
Conference proceeding of 13th lnternational workshop on low temperature detectors LTD13, 1185, pp. 290--293 (2010).

M. Fujiwara, H. Nagata, Y. Hibi, H. Matsuo, M. Sasaki,
"Cryogenic Low Noise Amplifier with GaAs JFETs,"
Conference proceeding of 13th lnternational workshop on low temperature detectors LTD13, 1185, pp. 267--270 (2010).

H. Nagata, Y. Hibi, H. Matsuo, H. Ikeda, M. Fujiwara,
"Development of cryogenic analog amplifiers based on GaAs-JFET technology for high impedance array sensors,"
Conference proceeding of 13th lnternational workshop on low temperature detectors LTD13, 1185, pp. 115--118 (2010).

H. Matsuo, Y. Hibi, T. Suzuki, M. Naruse, T. Noguchi, Y. Uzawa, H. Nagata, H. Ikeda, T. Otani, M. Fujiwara,
"Superconducting THz Camera with GaAs-JFET Cryogenic Readout Electronics,"
Conference proceeding of 13th lnternational workshop on low temperature detectors LTD13, 1185, pp. 393--396 (2010).

M. Fujiwara, M. Toyoshima, M. Sasaki, K. Yoshino, Y. Namb, and A. Tomita,
"Performance of hybrid entanglement photon pair source for quantum key distribution,"
Appl. Phys. Lett. 95(26), pp. 261103 (2009).

M. Akiba, K. Tsujino, K. Sato, M. Sasaki,
"Multipixel silicon avalanche photodiode with ultralow dark count rate at liquid nitrogen temperature,"
Opt. Express 17(19), pp. 16885--16897 (2009).

Z. Wang, S. Miki, M. Fujiwara,
"Superconducting Nanowire Single-Photon Detectors for Quantum Information and Communications,"
IEEE Journal of Selected Topics in Quantum Electoronics, 15(6), pp. 1741--1747 (2009).

S. Miki, M. Takeda, M. Fujiwara, M. Sasaki, Z. Wang,
"Compactly packaged superconducting nanowire single-photon detector with an optical cavity for multichannel system,"
Opt. Express 17, pp. 23557--23564 (2009).

M. Akiba, K. Tsujino, K. Sato, M. Sasaki,
"A multipixel silicon APD with ultralow dark count rate at liquid nitrogen temperature,"
Opt. Express 17(19), pp. 16885--16897 (2009).

S. Miki, M. Takeda, M. Fujiwara, M. Sasaki, A. Otomo, Z. Wang,
"Superconducting NbTiN Nanowire Single Photon Detectors with Low Kinetic Inductance,"
Appl. Phys. Express 2, pp. 075002/1--3 (2009).

S. Miki, M. Fujiwara, M. Sasaki, Z. Wang,
"Development of SNSPD System With Gifford-McMahon Cryocooler,"
IEEE Trans. Appl. Supercond. 19(3), pp. 332--335 (2009).

M. Fujiwara, S. Miki, M. Sasaki, and Z. Wang,
"Multi-channeled NbN superconducting single photon detectors (SSPDs) system with NbN meander nanowires,"
Proc. of The 9th International Conference on Quantum Communication, Measurement and Computing (QCMC2008), pp. 279--282 (2009).

M. Fujiwara, H. Nagata, H. Matsuo, and M. Sasaki,
"Optical control of low frequency noise behavior in cryogenic GaAs junction field effect transistor,"
Cryogenics 49, pp. 626--629 (2009).

Y. Hibi, H. Matsuo, H. Arai, H. Nagata, H. Ikeda, and M. Fujiwara,
"The Cryogenic Multiplexer and Shift Register for Submillimeter-wave Digital Camera,"
Cryogenics 49, pp. 672--675 (2009).

H. Nagata, H. Matsuo, Y. Hibi, M. Nakahashi, H. Ikeda, and M. Fujiwara,
"GaAs cryogenic readout electronics for high impedance detector arrays for far-infrared and submillimeter wavelength region,"
Cryogenics 49, pp. 676--680 (2009).

T. Honjo, S. W. Nam, H. Takesue, Q. Zhang, H. Kamada, Y. Nishida, O. Tadanaga, M. Asobe, B. Baek, R Hadfield, S. Miki, M. Fujiwara, M. Sasaki, Z. Wang, K. Inoue, and Y. Yamamoto,
"Long-distance entanglement-based quantum key distribution over optical fiber,"
Opt. Exp. 16 (23), pp 19118--19126 (2008).

M. Akiba, K. Ogawa, K. Wakamori, K. Ogawa, S. Ito,
"Measurement and simulation of the effect of snowfall on free-space optical propagation,"
Appl. Opt. 47 (31), pp 5736--5743 (2008).

M. Fujiwara, H. Nagata, H. Matsuo, and M. Sasaki,
"Optical reduction of low frequency noise in cryogenic GaAs junction field effect transistor ,"
Appl. Phys. Lett. 93 pp 043503/1--3 (2008).

A. Tanaka, M. Fujiwara, S. W. Nam, Y. Nambu, S. Takahashi, W. Maeda, K. Yoshino, S. Miki, B. Baek, Z. Wang, A. Tajima, M. Sasaki, and A. Tomita,
"Ultra fast quantum key distribution over a 97 km installed telecom fiber with wavelength division multiplexing clock synchronization,"
Opt. Express 16 (15), pp 11354--11360 (2008).

S. Miki, M. Fujiwara, M. Sasaki, B. Baek, A. J. Miller, R. H. Hadfield, S. W. Nam, Z. Wang,
"Large sensitive-area NbN nanowire superconducting single-photon　detectors fabricated on single-crystal MgO substrates,"
Appl. Phys. Lett. 92, pp. 061116/1--3 (2008).

H. Nagata, J. Kobayashi, H. Matsuo, M. Nakahashi, K. Kobayashi, H. Ikeda, M. Fujiwara,
"Fabrication of cryogenic readout circuits with n-type GaAs-JFETs for low temperature detectorsm,"
J Low Temp Phys, pp 1--6, (2008).

M. Fujiwara and M. Sasaki,
"Direct measurement of photon number statistics at telecom wavelengths using a charge integration photon detector,"
Appl. Opt. 46 (16), pp. 3069--3074 (2007).

S. Miki, M. Fujiwara, M. Sasaki, Z. Wang,
"NbN Superconducting Single-Photon Detectors Prepared on Single-Crystal MgO Substrates,"
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 17, 2, pp 285--288 (2007).

M. Fujiwara and M. Sasaki,
"Direct measurement of photon number statistics at telecom wavelengths using a charge integration photon detector,"
Appl. Opt. 46 (16), pp 3069--3074 (2007).

K. Tsujino, M. Akiba, and M. Sasaki,
"A charge-integration readout circuit with a linear-mode silicon avalanche photodiode for a photon-number resolving detector,"
Opt. Spectrosc.103 (1), pp 86--89 (2007).

M. Fujiwara, and M. Sasaki,
"Direct measurement of non-Poissonian distribution by charge integration photon detector: CIPD,"
Proc. of The 8th International Conference on Quantum Communication, Measurement and Computing(QCMC2006), Japan pp 389--392 (2007).

K. Tsujino, M. Akiba, and M. Sasaki,
"Cherge-Integration Photon Detector with Silicon APD in The Linear Mode ,"
Proc. of The 8th International Conference on Quantum Communication, Measurement and Computing(QCMC2006), pp 549--552 (2007).

M. Fujiwara, and M. Sasaki,
"Photon Number Resolving Detector at Telecom Wavelengths: Charge Integration Photon Detector (CIPD) ,"
IEEE Journal of Selected Topics in Quantum Electronics (JSTQE), 13 (4), pp 952--958, (2007).

K. Tsujino, M. Akiba, and M. Sasaki,
"Ultralow-noise readout circuit with an avalanche photodiode: toward a photon-number-resolving detector,"
Appl. Opt. 46 (7), pp 1009--1014 (2007).

H. Nagata, J. Kobayashi, H. Matsuo, M. Akiba, and M. Fujiwara,
"Cryogenic readout integrated circuits for submillimeter-wave camera,"
Nucl. Instrum. Methods A 559, pp 823--825 (2006).

M. Fujiwara and M. Sasaki,
"Photon-number-resolving detection at a telecommunications wavelength with a charge-integration photon detector,"
Opt. Lett. 31 (6), pp 691--693 (2006).

M. Fujiwara and M. Sasaki,
"Multiphoton discrimination at telecom wavelength with charge integration photon detector,"
Appl. Phys. Lett. 86, pp 111119/1--3 (2005).

M. Akiba, M. Fujiwara, and M. Sasaki,
"Ultrahigh-sensitivity high-linearity photodetection system using a low-gain avalanche photodiode with an ultralow-noise readout circuit,"
Opt. Lett. 30 (2), pp 123--125 (2005).

M. Fujiwara and M. Sasaki,
"Performance of GaAs JFET at a cryogenic temperature for application to readout circuit of high-impedance detectors,"
IEEE Trans. Electron Devices, 51 (12), pp 2042--2047 (2004).

M. Fujiwara and M. Sasaki,
"Photon number resolving detector at telecommunication wavelength,"
Quantum Communication, Measurement and Computing, pp 40--43(American Institute of Physics 2004).

M. Akiba and M. Fujiwara,
"Ultra low-noise near-infrared detection system with a Si p-i-n photodiode,"
Opt. Lett. 28 (12), pp 1010--1012 (2003).

M. Fujiwara, T. Hirao, M. Kawada, H. Shibai, S. Matsuura, H. Kaneda, M. Patrashin, and T. Nakagawa,
"Develpment of Ge:Ga far-infrared photoconductor direct hybrid 2D array,"
Appl. Opt. 42 (12), pp 2166--2173 (2003).

H. Shibai, S. Arimura, M. Tanaka, T. Teshima, Y. Doi, T. Nakagawa, N.Narita, S. Makiuti, N. Hiramoto, M. Fujiwara, M. Okuda, and A. Itoh,
"FIRBE: Far-infrared balloon-borne experiment,"
Adv. Space Res. 30, pp 1289--1295 (2002).

M. Fujiwara, M. Sasaki, and M. Akiba,
"Reduction method for low-frequency noise of GaAs junction field-effect transistor at a cryogenic temperature,"
Appl. Phys. Lett. 80 (10), pp 1844--1846 (2002).

C Hermannstadter, N A Jahan, J-H Huh, H Sasakura, K Akahane, M Sasaki, and I Suemune,
"Inter-dot coupling and excitation transfer mechanisms of telecommunication band InAs quantum dots at elevated temperatures,"
New J. Phys. 14, pp. 023037/1--19 (2012).

J. H. Huh, C. Hermannstadter1, K. Akahane, H. Sasakura, N. A. Jahan, M. Sasaki, and I. Suemene,
"Fabrication of Metal Embedded Nano-Cones for Single Quantum Dot Emission,"
Jpn. J. Appl. Phys. 50, pp 06GG02/1--5 (2011).

J. Ishi-Hayase, K. Akahane, N. Yamamoto, M. Kujiraoka, K, Ema, and M. Sasaki,
“Exciton coherence in semiconductor quantum dots,”
Phys. Stat. Sol. (c), 6(1), pp. 162--167 (2009).

M. Kujiraoka, J. Ishi-Hayase, K. Akahane, N. Yamamoto, K. Ema, M. Sasaki,
“A new method for coherent control in a quantum dot ensemble,”
J. phys. 193, pp. 012125/1--4 (2009).

M. Kujiraoka, J. Ishi-Hayase, K. Akahane, N. Yamamoto, K. Ema, M. Sasaki,
"Ensemble effect on Rabi oscillations of excitons in quantum dots,"
Phys. Stat. Sol. (a) Applications and materials science, 206(5), pp. 952--955 (2009).

O. Kojima, T. Isu, J. Ishi-Hayase, A. Kanno, R. Katouf, M. Sasaki, and M. Tsuchiya,
"Spectral Width Dependence of Residual Carrier Effect on Nonlinear Optical Response Of Weakly Confined Excitons,"
Phys. Stat. Sol. (c) 5 (9), pp 2858--2860 (2008).

O. Kojima, T. Isu, J. Ishi-Hayase, A. Kanno, R. Katouf, M. Sasaki, and M. Tsuchiya,
"Ultrafast response induced by interference effects between weakly confined exciton states," (selected as a paper of Editors' choice)
J. Phys. Soc. Jpn., 77 (4), pp 044701/1--4 (2008).

J. Ishi-Hayase, K. Akahane, N. Yamamoto, M. Kujiraoka, K. Ema, and M. Sasaki,
"Correlation effect of Rabi oscillations of excitons in quantum dots,"
J. Luminescence 128 (5-6), pp 1016--1018 (2008).

M. Kujiraoka, J. Ishi-Hayase, K. Akahane, N. Yamamoto, K. Ema, and M. Sasaki,
"Radiative and non-radiative relaxation of excitons in strain-compensated quantum dots,"
J. Luminescence 128 (5-6), pp 972--974 (2008).

O. Kojima, T. Isu, J. Ishi-Hayase, A. Kanno, R. Katouf, M. Sasaki, and M. Tsuchiya,
"Effects of excitation spectral width on decay profile of weakly confined excitons,"
J. Luminescence 128 (5-6), pp 966--968 (2008).

A. Kanno, R. Katouf, O. Kojima, J. Ishi-Hayase, M. Sasaki, M. Tsuchiya, and T. Isu,
"Photoluminescence dynamics of weakly confined excitons in GaAs thin films,"
J. Luminescence 128 (5-6), pp 1069--1071 (2008).

O. Kojima, T. Isu, J. Ishi-Hayase, A. Kanno, R. Katouf, M. Sasaki, and M. Tsuchiya,
"Decay of orientational grating of weakly confined excitons in GaAs thin films,"
J. Luminescence 128 (5-6), pp 963--965 (2008).

A. Kanno, R. Katouf, O. Kojima, J. Ishi-Hayase, M. Tsuchiya, and T. Isu,
"Ultrafast optical Kerr effect of excitons weakly confined in GaAs thin films,"
Phys. Stat. Sol. 5 (1), 360--363 (2008).

J. Ishi-Hayase, K. Akahane, N. Yamamoto, M. Kujiraoka, K. Ema, and M. Sasaki,
"Negligible Pure Dephasing in InAs Self-Assembled Quantum Dots ,"
Jpn. J. Appl. Phys. 46 (9B), pp 6352--6354, (2007).

J. Ishi-Hayase, K. Akahane, N. Yamamoto, M. Sasaki, M. Kujiraoka, and K. Ema,
"Radiatively limited dephasing of quantum dot excitons in the telecommunications wavelength range,"
Appl. Phys. Lett. 91 (10), pp 103111/1--3 (2007).

J. Ishi-Hayase, K. Akahane, N. Yamamoto, M. Kujiraoka, K. Ema, and M. Sasaki,
"Long-lived coherence of quantum dot excitons in the telecommunication waveband,"
Proc. of The 8th International Conference on Quantum Communication, Measurement and Computing(QCMC2006), pp 27--30 (2007).

O. Kojima, T. Isu, J. Ishi-Hayase, M. Sasaki, M. Tsuchiya,
"Enhancement of nonlinear optical response of weakly confined excitons in GaAs thin films by spectrally rectangle-shape-pulse-excitation ,"
J. Phys. Conference Series 61 pp 618--622 (2007).

O. Kojima, T. Isu, J. Ishi-Hayase, M. Sasaki, M. Tsuchiya,
"Ultrafast nonlinear optical response of weakly confined excitons in GaAs thin films,"
Phys. Stat. Sol. (c) 4 (5), pp 1731--1734 (2007).

T. Kishimoto, A. Hasegawa, Y. Mitsumori, J. Ishi-Hayase, M. Sasaki, and F. Minami,
"Decoherence suppression of excitons by bang-bang control,"
J. Lumin. 122-123, pp 539--541 (2007).

T. Kishimoto, A. Hasegawa, Y. Mitsumori, J. Ishi-Hayase, M. Sasaki, and F. Minami,
"Decoherence suppression of excitons in GaSe using three successive femtosecond optical pulses,"
Phys. Rev. B 74, pp 073202/1--4 (2006).

J. Ishi-Hayase, K. Akahane, N. Yamamoto, M. Kujiraoka, K. Ema, and M. Sasaki,
"Long dephasing time in self-assembled InAs quantum dots at over 1.3 μm wavelength,"
Appl. Phys. Lett. 88, pp 261907/1--3 (2006).

J. Ishi-Hayase, K. Akahane, N. Yamamoto, M. Kujiraoka, J. Inoue, K. Ema, M. Tsuchiya, and M. Sasaki,
"Coherent dynamics of excitons in a stack of self-assembled InAs quantum dots at 1.5-μm waveband,"
J. Lumin. 119-120, pp 318--322 (2006).

A. Sato, J. Ishi-Hayase, F. Minami, and M. Sasaki,
"Quantum beat and entanglement of multi-qubits interacting with a common reservoir,"
J. Lumin. 119-120, pp 508--512 (2006).

T. Kishimoto, H. Takahashi, A. Hasegawa, and F. Minami,
"Coherent pulse propagation in GaSe,"
J. Lumin. 119-120, pp 323--326 (2006).

J. Ishi-Hayase, K. Akahane, N. Yamamoto, and M. Sasaki,
"Long Coherence Time of Excitons in Self-assembled Quantum Dots Fabricated by Strain Compensation Technique,"
FEMD Newsletter 7 (4), 4--5 (March 2006).

O. Kojima, T. Isu, J. Ishi-Hayase, and M. Tsuchiya,
"Spectrally resolved nonlinear optical response of weakly confined excitons under femtosecond laser pulse excitation in GaAs thin films,"
Phys. Status Solidi 3, pp 675--678. (2006).

Y. Mitsumori, A. Hasegawa and M. Sasaki,
"Local field effect on Rabi oscillations of excitons localized to quantum islands in a single quantum well,"
Phys. Rev. B 71, pp 233305/1--4 (2005).

M. Sasaki, A. Hasegawa, J. Ishi-Hayase, Y. Mitsumori, and F. Minami,
"Theory of multiwave mixing and decoherence control in a qubit array system,"
Phys. Rev. B 71, pp 165314/1--14(2005).

M. Sasaki, A. Hasegawa, Y. Mitsumori, and F. Minami,
"Theory of active dephasing control in qubit arrays,"
J. Lumin. 108 (1-4), pp 215--219 (2004).

A. Hasegawa, T. Kishimoto, Y. Mitsumori, M. Sasaki, and F. Minami,
"Multi-wave-mixing of two-dimensional excitons in semiconductors,"
J. Lumin. 108 (1-4), pp 211--214 (2004).

Y. Mitsumori, Y. Ohkubo, A. Hasegawa, M. Sasaki, and F. Minami,
"Optical selection rule for hyper-rayleigh scattering in resonance with exciton states in ZnSe,"
J. Lumin. 108 (1-4), pp 259--262 (2004).

H. Munekata, A. Oiwa, Y. Mitsumori, R. Moriya, and T.Slupinski,
"Rotation of ferromagnetically coupled Mn spins in (Ga,Mn)As by hole spins,"
J. Supercond. 16 (2), pp 411--414 (2003).

A. Oiwa, R. Moriya, Y. Mitsumori, T. Slupinski, and H. Munekata,
"Manifestation of local magnetic domain reversal by spin-polarized carrier injection in (Ga,Mn)As thin films,"
J. Supercond. 16 (2), pp 439--442 (2003).

Hasegawa and Y. Mitsumori,
"Ultrafast electron control of optical device,"
J. Commun. Res. Lab. 49 (1), pp 97--103 (2002).

A. Oiwa, Y. Mitsumori, R. Moriya, T. Slupinski, and H. Munekata,
"Effect of Optical Spin Injectionon Ferromagnetically Coupled Mn Spins in the III-V Magnetic Alloy Semiconductor (Ga, Mn) As,"
Phys. Rev. Lett. 88, pp 137202/1--4 (2002).

H. Tobioka, Y. Mitsumori, F. Minami, and A. Hasegawa,
"Time-resolved three-pulse photon echoes in GaSe,"
J. Lumin. 94-95, pp 601--604 (2001).

Y. Mitsumori and F, Minami, "Transient coherent emission from anisotropic semiconductors studied with phase-locked pulse pairs,"
J. Lumin. 94-95, pp 663--666 (2001).

Y. Mitsumori, R. Kawahara, T. Kuroda, and F. Minami,
"Ultrafast phase distortion of the transmitted pulse in GaAs quantum wells,"
J. Lumin. 94-95, pp 645--648 (2001).

K. Hayasaka,
"Synthesis of two-species ion chains for a new optical frequency standard with an indium ion,"
Appl. Phys. B, 10.1007/s(00340-012-4909-9), pp. 1--6 (2012).

K. Hayasaka,
"Modulation-free optical locking of an external-cavity diode laser to a filter cavity,"
Opt. Lett. 36(12), pp. 2188--2190 (2011).

K. Matsubara, K. Hayasaka, Y. Li, H. Ito, S. Nagano, M. Kajita, and M. Hosokawa
"Frequency Measurement of the Optical Clock Transition of 40Ca+ Ions with an Uncertainty of 10-14 Level,"
Applied Physics Express 1, pp 067011/1--2 (2008).

M. Keller, B. Lange, K. Hayasaka, W. Lange, H. Walther,
"Stable Long-Term Coupling of a Single Ion to a Cavity Mode,"
Journal of Modern Optics. 54, pp. 1607--1617 (2007).

J. Labaziewicz, P. Richerme, K. R. Brown, I. L. Chuang, and K. Hayasaka,
"Compact, filtered diode laser system for precision spectroscopy,"
Opt. Lett. 32 (5) pp 572--574 (2007).

A. Hasegawa, K. Fukuda, M. Kajita, H. Ito, M. Kumagai, M. Hosokawa, N.Kotake, and T. Morikawa,
"Accuracy Evaluation of Optically Pumped Primary Frequency Standard CRL-01,"
Metrologia 41 (4), pp 257--263 (2004).

M. Keller, B. Lange, K. Hayasaka, W. Lange, and H. Walther,
"A calcium ion in a cavity as a controlled single-photon source ,"
New J. Phys. 6 (95), pp 1 --22 (2004).

M. Keller, B. Lange, K. Hayasaka, W. Lange, and H. Walther,
"Continuous generation of single photons with controlled waveform in an ion-trap cavity system,"
Nature 431, pp 1075--1078 (2004).

M. Keller, B. Lange, K. Hayasaka, W. Lange, and H. Walther,
"Deterministic cavity quantum electrodynamics with trapped ions,"
J. Phys. B: At. Mol. Opt. Phys. 36 (3), pp 613--622 (2003).

K. Hayasaka, and M. Watanabe,
"Saturation Spectroscopy of Potassium for Frequency Stabilization of Violet Diode Lasers S. Uetake,"
Jpn. J. Appl. Phys. 42 (3B), pp L332--334 (2003).

M. Keller, B. Lange, K. Hayasaka, W. Lange, and H. Walther,
"Deterministic coupling of single ions to an optical cavity,"
Appl. Phys. B 76 (2), pp 125--128 (2003).

F. L. Hong, Y . Zhang, J. Ishikawa, A. Onae, and H. Matsumoto
"Hyperfine structure and absolute frequency determination of the R(121)35-0 and P(142)37-0 transitions of 127I2 near 532 nm ,"
Opt. Commun. 212, pp 89--95 (2002).

K. Hayasaka,
"Frequency stabilization of an extended-cavity violet diode laser by resonant optical feedback,"
Opt. Commun. 206, pp 401--409 (2002).

G. Guthorlein, M. Keller, W. Lange, H. Walther, and K. Hayasaka,
"Cavity-QED with a single trapped 40Ca+-ion,"
Laser Spectroscopy, pp 349-352, ed. S.Chu, V.Vuletic, A.J.Kerman, C.Chin (World Scientific, Singapore 2002).

G. Guthorlein, M. Keller, K. Hayasaka, W. Lange, and H. Walther,
"A single ion as a nanoscopic probe of an optical field,"
Nature 414, pp 49--51 (2001).

K. Toyoda, A. Miura, K. Hayasaka, M. Watanabe, and S. Urabe,
"Laser cooling of calcium ions by use of ultraviolet laser diodes: Significant induction of electron-shelving transitions,"
Opt. Lett. 26, 1897--1899 (2001).