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ICORP top page > Past Projects > Quantum Transition 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
1994.3~1998.12 Quantum Transition Project
Research Directors
Prof. Hiroyuki Sakaki Prof. Hiroyuki Sakaki
Production Technology Institute, The University of Tokyo
Prof. James Merz   Prof. James Merz
Nortre Dame University
Prof. James Allen University of California

Counterpart Organization: University of California (U.S.A.)
Supporting National Agency: National Science Foundation (NSF)

It is known that when electrons are confined into an ultra-thin membrane at about a 10-nm semiconductor, electronic quantum waves clearly appear and form the constant-wave state (a level), having specific frequencies perpendicular to the membrane. By confining electrons into ultra-thin wires or boxes and in quest for the way to better control the electrons, we studied novel functions and material properties through a cooperative research with the U.S.A.
Aiming at developing a method for constituting quantum wires and box structures as well as increasing the controlling capability of quantum states, we made big advances in the constitution of self-assembling quantum boxes, edge-shaped wires, and stepped thin wires and also manifested the features of low-dimensional electrons. Studying the responses to terahertz radiation resonating between the levels with free electron lasers of the UCSB, we discovered mixed lights of terahertz and near-infrared in low level excitons and the dynamic Franz-Keldysh effects. In addition, we achieved the wavelength conversion between far and near infrared lights by a level transition.
Japan Science and Technology Agency
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