Chinese Optics Letters, 2018, 16 (4): 041903, Published Online: Jul. 12, 2018  

Micro/nano-fiber-based source of heralded single photons at the telecom band Download: 560次

Author Affiliations
1 College of Precision Instrument and Opto-electronics Engineering, Key Laboratory of Optoelectronics Information Technology of Ministry of Education, Tianjin University, Tianjin 300072, China
2 Joint Institute for Measurement Science, Tsinghua University, Beijing 100084, China
3 Department of Physics, Tsinghua University, Beijing 100084, China
Abstract
We experimentally demonstrate a heralded single photon source at 1290 nm by exploiting the spontaneous four wave mixing in a taper-drawn micro/nano-fiber (MNF). Because the frequency detuning between the pump and heralded single photons is 58 THz, the contamination by Raman scattering is significantly reduced at room temperature. Since the MNF is naturally connected to standard single mode fibers via fiber tapers, the source would be compatible with the existing fiber networks. When the emission rate of heralded signal photons is about 4.6 kHz, the measured second-order intensity correlation function g(2)(0) is 0.017±0.002, which is suppressed by a factor of more than 55, relative to the classical limit.

Jie Su, Liang Cui, Yuhang Li, Xiaoying Li. Micro/nano-fiber-based source of heralded single photons at the telecom band[J]. Chinese Optics Letters, 2018, 16(4): 041903.

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