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ICORP top page > Past Projects > Quantum Entanglement Project
Past Projects
Ultrashort Pulse Laser
Membrane Mechanisms
Quantum Spin Information
Organ Regeneration
Computational Brain
Nanoscale Quantum Conductor Array
Dynamic Nanomachine
Entropy Control
Calcium Oscillation
Photon Craft
Cell Mechanosensing
Quantum Entanglement
Development of HIV/AIDS vaccine for HIV-1 Subtype-E
Single Molecule Processes
Cold Trapped Ion
Mind Articulation
Ceramics Superplasticity
Quantum Transition
Subfemtomole Biorecognition
Microbial Evolution
Atom Arrangement-Design and Control for New Materials
1999.1~2003.12 Quantum Entanglement Project
Research Directors
Prof. Yoshihisa Yamamoto Prof. Yoshihisa Yamamoto
Stanford University/National Institute of Informatics
Prof. Serge Haroche   Prof. Serge Haroche
Ecole Normale Superieure/College of France

Counterpart Organization: French National Center for Scientific Research (CNRS)/Ecole Normale Superieure (France)
Supporting National Agency: CNRS

Currently, by manipulating a single atom, a single electron and a single photon, or by utilizing quantum correlations between several particles, a research on trying to overcome the limitations on classical computers and the communications has become active. In this project, we aimed at defining the essence of quantum correlations (entanglement) by employing various experimental methods such as quantum optics and the nuclear magnetic resonance, and also establishing a core technology of quantum information systems.
We had proposed a method for efficiently emitting a single photon by enhancing resonance of a single quantum dot with a micro-resonator field. By conducting an experiment of quantum key distribution with such a single photon source, we were convinced that the transmission speed is not decelerated over a long distance. In addition, we proposed all-silicon quantum computers that uses the spin of an atomic nucleus in solid crystals as a qubit, and conceived initializing, reading and writing to the spin of an atomic nucleus; we experimentally confirmed those processes. Furthermore, we have achieved a record of information-storage period in a quantum register. We gained various achievements that will be applied to future quantum information and communications.
Japan Science and Technology Agency
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