Overview of Research in Laboratories

Material Science Laboratory                      Keiichi Torimitsu
 The Materials Science Laboratory aims at producing new functional materials and designing of advanced device based on novel materials and biological function. Controlling the configuration and coupling of atoms and molecules is our approach to accomplish these goals. Bio-nano research and diamond-device research are set as the principle research in our laboratory.
 We have three research groups covering from semiconductor devices, such as GaN, to organic materials, such as receptor proteins. The characteristic feature of our laboratory is the effective sharing of the unique materials and measurement techniques of each group. This enables fusion of research fields and techniques, which leads to innovative material research for the IT society.
 We set up European laboratory in U.K. for bio-nano research, our principal research, in October 2004 and strengthen our research activities. We promote collaborations with international organizations to develop a firm basis of basic science.

Physical Science Laboratory
                    Hiroshi Yamaguchi
 We are studying semiconductor and superconductor-based solid-state devices, which will have a revolutionary impact on communication and information technologies in the 21st century. In particular, we promote research of nanoscale devices fabricated using high-quality crystal growth and fine lithographic techniques.
 The five groups in our laboratory are working in the following areas: precise and dynamical control of single electrons, nanodevices operating with ultra low power consumption, novel nanomechanical systems utilizing mechanical degrees of freedom in solid-state architechtures, coherent quantum control of semiconductor and superconductor systems, carrier interactions in semiconductor hetero- and nanostructures, atom chips, spintronics manipulating both electron and nuclear spins. We also promote the studies of cutting-edge nanolithography techniques, high-quality crystal growth, and theoretical studies including first-principle calculations.

Optical Science Laboratory                        Yasuhiro Tokura
 This laboratory aims for the development of core-technologies that will innovate on optical communications and optical signal processing, and seeks fundamental scientific progresses.
The groups in our laboratory are working for the quantum state control by very weak light, the search for intriguing phenomena using very intensive and short pulse light, and very small optical integrated circuits using two-dimensional photonic crystals, based on the optical properties of semiconductor nanostructures like a quantum dot.
 In this year, we realized improvements of quantum cryptography using entangled photon pairs, optical properties of high quality semiconductor nanowires, and a coupled resonator waveguide formed by ultrahigh-Q photonic crystal nano-resonators.


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