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Quantum Homodyne Detection Based on Polarization Diversity Technique |
| LU Yuan;ZENG Gui-Hua;YI Zhi |
| State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200030 |
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| Cite this article: |
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LU Yuan, ZENG Gui-Hua, YI Zhi 2008 Chin. Phys. Lett. 25 1950-1953 |
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Abstract A polarization diversity receiver scheme is presented for improving efficiency of balance homodyne detection. The proposed scheme may mitigate polarization fluctuation between signal and local oscillator field. With simple linear optical component and electronic processing circuit, the noise caused by differential phase and polarization mode between signal and local oscillators may be significantly decreased. To track the polarization fluctuation, a novel algorithm based on polarization diversity receiver which can achieve better performance in terms of linear quantum optics principle is proposed.
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| Keywords:
03.67.Dd
03.65.Ud
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Received: 08 December 2007
Published: 31 May 2008
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| PACS: |
03.67.Dd
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(Quantum cryptography and communication security)
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03.65.Ud
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(Entanglement and quantum nonlocality)
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