Quantum ICT Collaboration Center was established within NICT in April 2021, aiming to accelerate delivering new information security rooted in quantum technologies to society. The Japanese government has designated the center as the Quantum Security Hub, one of Japan's Quantum Technology Innovation Hubs.
In the conventional information technology framework, information is embodied by symbols 0 and 1. Electric and optical pulses implement the symbols. Since being established in the middle of the 20th century, the framework has been dominant.
At the same time, the ultimate physical law of quantum mechanics has stimulated us to renovate the conventional framework. Furthermore, we are convinced that information technology has entered a new paradigm, 'quantum information technology.' The establishment of the Quantum Technology Innovation Hubs reflects the emergence of the new paradigm. In quantum information technology, a superposition of states 0 and 1 embodies information. We call the superposition state a quantum bit or a qubit.
A quantum computer has become a threat to the modern cryptographic system. A quantum computer exploits quantum mechanical phenomena and uses a qubit as the basic unit of information. Research in the mid-1990s showing that a quantum computer could crack modern cryptographic systems shocked society instantly. Today, small-scale quantum computers working with cloud services have become available.
A quantum computer will not crack quantum cryptography. While modern cryptography faces potential threats from quantum computers, quantum cryptography provides unbreakable security even against unbounded computer resources. Researchers have already put quantum cryptography into practice. In multiple countries, they have started constructing infrastructure using it.
In the future, we intend to base information and communication systems on quantum mechanics. New applications and services are becoming available by integrating quantum computing and cryptography with conventional technologies.
Quantum ICT collaboration center is involved in creating an open collaboration environment, aiming to accelerate research and development for social implementation, standardization and human resources development. We wish to work with people in various fields and industries to create a new cross-disciplinary area, the "Quantum security field".Thank you very much.