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

Yu Yokotera; Naoki Yamamoto

doi:10.1109/CDC.2016.7798644

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

Yu Yokotera, Naoki Yamamoto

Department of Applied Physics and Physico-Informatics

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	2016 IEEE 55th Conference on Decision and Control, CDC 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	2539-2542
Number of pages	4
ISBN (Electronic)	9781509018376
DOIs	https://doi.org/10.1109/CDC.2016.7798644
Publication status	Published - 2016 Dec 27
Event	55th IEEE Conference on Decision and Control, CDC 2016 - Las Vegas, United States Duration: 2016 Dec 12 → 2016 Dec 14

Other

Other	55th IEEE Conference on Decision and Control, CDC 2016
Country/Territory	United States
City	Las Vegas
Period	16/12/12 → 16/12/14

ASJC Scopus subject areas

Artificial Intelligence
Decision Sciences (miscellaneous)
Control and Optimization

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10.1109/CDC.2016.7798644

Cite this

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., 7798644, Institute of Electrical and Electronics Engineers Inc., pp. 2539-2542, 55th IEEE Conference on Decision and Control, CDC 2016, Las Vegas, United States, 16/12/12. https://doi.org/10.1109/CDC.2016.7798644

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doi = "10.1109/CDC.2016.7798644",

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N2 - 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.

AB - 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.

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

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