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arXiv · 1208.4971

An all-fiber source of pulsed twin beams at telecom band for quantum communication

Xueshi Guo·Xiaoying Li·Nannan Liu·Lei Yang·Z. Y. Ou
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Abstract

Motivated by the pursuit of a simple system to produce non-classical light sources for long- distance quantum communication, we generate for the first time an all-fiber source of pulsed twin beams in 1550 nm band by using a high gain fiber optical parametric amplifier. The noise of intensity difference of the twin beams is below the shot noise limit by 3.1 dB (10.4 dB after correction for losses). A detailed study reveals a number of limiting factors for higher noise reduction. Therefore, further noise reduction will be feasible once care is taken for these limiting factors.

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Xueshi Guo, Xiaoying Li, Nannan Liu, Lei Yang, Z. Y. Ou. 2012-08-24. An all-fiber source of pulsed twin beams at telecom band for quantum communication. https://doi.org/10.1063/1.4773303

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