Purification of Squeezed Vacuum Pulse Generated from a Sagnac Loop Fiber Using Linear Optics and Conditional Homodyne Detection
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概要
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Purification of quadrature squeezed vacuum pulses at the wavelength of 1.5 μm generated from a Sagnac loop fiber interferometer is experimentally demonstrated using linear optics and conditional homodyne detection. The anti-squeezed quadrature variance degraded by guided acoustic wave Brillouin scattering in the fiber is significantly improved from 12.6 to 4 dB after the post selection, while the squeezed quadrature variance of $-0.7$ dB slightly decreases to $-0.3$ dB due to the linear optical loss caused by a beam splitter. This result agrees well with the theory.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2009-03-25
著者
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Kannari Fumihiko
Department Of Electrical Engineering Faculty Of Science And Technology Keio University
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Momose Yoshinori
Department of Electronics and Electrical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Fujiwara Yuji
Department of Electronics and Electrical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Hirosawa Kenichi
Department of Electronics and Electrical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Ushio Hidetake
Department of Electronics and Electrical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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