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Paper Abstract and Keywords
Presentation 2016-11-24 13:00
[Poster Presentation] LQG control of squeezing angle fluctuation
Ryosuke Kuroyanagi, Naoki Yamamoto (Keio Univercity)
Abstract (in Japanese) (See Japanese page) 
(in English) In quantum optics, squeezed states of light are generated by using an optical parametric oscillator (OPO). It is necessary to get high level squeezed states that can be used to generate quantum entangled states. A central issue of an OPO is that the squeezed state suffers from angle fluctuation. This fluctuation makes the state mixed, and as a result the squeezing level is decreased. Currently, a simple proportional feedback control is employed to compensate this fluctuation. In this research, we apply the linear quadratic Gausian (LQG) control method to control the squeezing angle fluctuation. we design an optimal regulator and simulate the closed loop performance.
Keyword (in Japanese) (See Japanese page) 
(in English) OPO / squeezing angle / LQG control / / / / /  
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Conference Information
Committee QIT  
Conference Date 2016-11-24 - 2016-11-25 
Place (in Japanese) (See Japanese page) 
Place (in English) KEK Kobayashi-hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quantum Information 
Paper Information
Registration To QIT 
Conference Code 2016-11-QIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) LQG control of squeezing angle fluctuation 
Sub Title (in English)  
Keyword(1) OPO  
Keyword(2) squeezing angle  
Keyword(3) LQG control  
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1st Author's Name Ryosuke Kuroyanagi  
1st Author's Affiliation Keio Univercity (Keio Univercity)
2nd Author's Name Naoki Yamamoto  
2nd Author's Affiliation Keio Univercity (Keio Univercity)
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Speaker Author-1 
Date Time 2016-11-24 13:00:00 
Presentation Time 90 minutes 
Registration for QIT 
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