柳澤政宏先生セミナー

東京大学工学部計数工学科　システム情報談話会

7月14日13時00分より，オーストラリア国立大学 (ANU) の柳澤政宏先生のセミナーを開催いたします．柳澤先生には，古典・現代制御の手法の適用による量子制御系のリヤプノフ安定性とLQG最適制御についてご講演いただきます．皆様奮ってのご参加をお待ちいたしております．

日時：2008年7月14日（月）　13:00～14:30

場所：東京大学本郷キャンパス工学部6号館　3階セミナー室AD

(アクセス) http://www.u-tokyo.ac.jp/campusmap/cam01_04_07_j.html#hongo

講演者：柳澤政宏先生（オーストラリア国立大学，Department of Engineering）

題目：Applications of classical and modern control techniques to quantum systems

概要： Lyapunov stability and LQG control are the most fundamental and important techniques of classical and modern control theory. In this talk, we discuss the utility of these control techniques in quantum information technologies using examples such as spins, optical cavities and Bose-Einstein condensates. Spins and optical cavities are well studied quantum system in quantum information and control, and Lyapunov functions are useful to show the performance of feedback systems as well as the stability. Other physical substrates of quantum information processing, atom laser beams, are devices that exploit wave properties of matter to form a beam of atoms that is analogous to optical lasers in that it is coherent and intense. While the concept of an atom laser has been experimentally demonstrated, atoms lasers are still quite a way from being available for use in applications. Coherence control is the key to success in the applications of atom laser beams because atoms are much more fragile than photons. In this example, it is shown that atom laser coherence is improved by a new control scheme based on LQG control.

連絡先: 原辰次 (Shinji_Hara＠ipc.i.u-tokyo.ac.jp)
小島千昭 (Chiaki_Kojima＠ipc.i.u-tokyo.ac.jp)