The 105th KARC Colloquium
The 105th KARC Colloquium was ended. Thank you for the participation.
| Date&Time | Wednesday, April 28 , 2010 15:00- |
| Place | Conference Room, 2F, Research Building 1,Kobe Advanced ICT Research Center |
| Lecturer | 1.”Novel quantum phenomena in superconductor/ferromagnet nanostructures” |
| Speaker | Taro Yamashita , Researcher Nano-ICT group ,Kobe Advanced ICT Research Center, NICT |
| Abstract | In recent years, novel quantum phenomena in superconductor/ferromagnet nanostructures have been studied actively. In the superconductors, Cooper pairs consisting of up- and down-spin electrons carry the supercurrent (total spin is zero). On the other hand, the electric current flowing in the ferromagnetic metals carry the "spin" in addition to the "charge" because of the imbalance between the numbers of up- and down-spin electrons at the Fermi level. As a result, in the superconductor/ferromagnet nanostructures, various interesting quantum phenomena, e.g. pi-coupling Josephson effect, appear due to the competition between the Cooper pair and the electron's spin. In my talk, theoretical studies of the Andreev reflection and the Josephson effect in the superconductor/ferromagnet nanostructures and a proposal of new devices based on the quantum phenomena will be presented. |
| Lecturer | 2.”Fabrication of organic nanophotonic devices and their active nonlinear optical applications” |
| Speaker | Shinichiro Inoue , Senior Researcher, Nano-ICT group ,Kobe Advanced ICT Research Center, NICT |
| Abstract | Photonics has evolved towards device miniaturization with the ultimate objective of integrating many optical components onto a single compact chip to produce photonic integrated circuits with multiple functionalities. In conventional optics, miniaturization of structures in photonic active manipulations is restricted by very weak matter-radiation interaction and diffraction limit. In this colloquium, we show experimental evidence that the performance of nonlinear optical applications such as the all-optical switching and the wavelength conversion devices are dramatically improved by controlling the matter-radiation nonlinear interaction in the nonlinear optical polymer two-dimensional photonic crystals fabricated by organic nano-fabrication technology. The results will open up possibilities in unprecedented applications such as highly efficient and ultrafast optical data processing systems in organic nanophotonic architectures. |
| Language | Japanese |
| Admission | Free |
| Organizer | Zhen Wang Group Leader , Nano ICT group, Kobe Advanced ICT Research Center, NICT |