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Study on Generation of Entangled Photon Pairs Through Photonic Crystal Fiber

Author: LuoSiXing
Tutor: YangBoJun
School: Beijing University of Posts and Telecommunications
Course: Physical Electronics
Keywords: Entangled photon pairs Photonic crystal fiber Four-wave mixing Optical fiber communication
CLC: TN253
Type: Master's thesis
Year: 2010
Downloads: 59
Quote: 0
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Abstract


The goal of this study is : entangled photon pairs generated in photonic crystal fiber . Photonic crystal fiber has many advantages , such as the zero-dispersion wavelength can be adjusted , highly nonlinear experiments with a photonic crystal fiber instead of traditional optical and nonlinear crystals as a core component of entangled photon source . Entangled photon source for quantum key distribution system is essential. The four-wave mixing in the optical fiber is a good way to produce quantum correlation photon source , because the photons generated by this method can be efficiently coupled into the transmission fiber . For long-distance quantum key distribution system , the source of entangled photons at 1.55 μm wavelength is very meaningful . Of the paper is as follows : ● reference theoretical model of wavelength conversion by four-wave mixing coupled wave equation and its analytical solution analysis parameters such as the length of the photonic crystal fiber nonlinear coefficient , dispersion slope and pump power the impact of the experimental results , this experiment used equipment guiding significance. ● We use the four-wave mixing , and get entangled photon source for high quality , high-speed dispersion photonic crystal fiber pumped 40 meters long . 1550 nm pump were obtained at 1545 nm and 1555 nm signal light and busy frequency light . The work rate of 1.43kHz, photon consistent with accidental coincidence than 8 . Such an entangled photon source can be applied to a quantum key distribution system , generated by the bit error rate can be less than 6% .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Optical waveguide and integrated optics > Fiber optic components
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