National Institute of Advanced Industrial Science and Technology (AIST) Develops Optical Control Device Structure for Quantum Computers.Tokyo, Japan, Dec 19, 2005 - (JCN) - The Ultrafast Optoelectronic Devices Group of the Photonics Research Institute of the National Institute of Advanced Industrial Science and Technology The National Institute of Advanced Industrial Science and Technology (産業技術総合研究所 (AIST AIST Advanced Industrial Science and Technology (Japan) AIST National Institute of Advanced Industrial Science and Technology (Japan) AIST Association for Iron & Steel Technology ) has developed a basic structure of an optical control device for use in quantum computers. The device is the world's first optical control quantum computer device that has had multi-bit capability. The research group has used a coupled quantum dot structure which has two or more quantum dots layered at a short distance. An exciter ex·cit·er n. 1. One that excites: an exciter of animosity. 2. An auxiliary generator used to provide field current for a larger generator or alternator. 3. enclosed in each quantum dot is treated as a quantum bit to enable the structure to be used as a multi-bit device. The group has employed molecular beam epitaxy A technique that "grows" atomic-sized layers on a chip rather than creating layers by diffusion. to create first a quantum dot structure made of InAs (indiaum arsenide)/GaAs (gallium arsenide) and then a metal mask with a 0.2-micron-diameter opening in the structure as well as an electrode to which voltage can be applied. The research results are published in the December 19 issue of Applied Physics Letters Applied Physics Letters is a weekly peer-reviewed scientific journal published by the American Institute of Physics devoted to the publication of new experimental and theoretical papers about applications of physics to science, engineering, and modern technology. . Copyright [c] 2005 Japan Corporate News Network. All rights reserved. |
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