Quantum back-action evasion via coherent feedback control: A geometric control approach

Yu Yokotera, Naoki Yamamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Engineering a detector for sensing an extremely tiny signal such as the gravitational-wave force is a very important subject in quantum physics. A major obstacle towards this goal is that, in the standard detection scheme, the measurement noise is lower bounded by the so-called standard quantum limit (SQL), which is originated from the intrinsic measurement back-action. Hence the detector system has to be carefully engineered so that it evades the back-action and eventually beats the SQL; feedback control is, of course, expected to be a very effective method to achieve this goal. In this paper, we show that this engineering problem can be formulated and solved within the framework of well-developed geometric control theory, for a specific opto-mechanical system.

Original languageEnglish
Title of host publication2016 IEEE 55th Conference on Decision and Control, CDC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2539-2542
Number of pages4
ISBN (Electronic)9781509018376
DOIs
Publication statusPublished - 2016 Dec 27
Event55th IEEE Conference on Decision and Control, CDC 2016 - Las Vegas, United States
Duration: 2016 Dec 122016 Dec 14

Other

Other55th IEEE Conference on Decision and Control, CDC 2016
CountryUnited States
CityLas Vegas
Period16/12/1216/12/14

ASJC Scopus subject areas

  • Artificial Intelligence
  • Decision Sciences (miscellaneous)
  • Control and Optimization

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    Yokotera, Y., & Yamamoto, N. (2016). Quantum back-action evasion via coherent feedback control: A geometric control approach. In 2016 IEEE 55th Conference on Decision and Control, CDC 2016 (pp. 2539-2542). [7798644] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CDC.2016.7798644