High-Quality Fiber-Based Heralded Single-Photon Source at 1.5 μm

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2012,（5）
• 页码范围: 151-153
• 页数: 3页
• 语种: 英文
• DOI: 10.1088/0256-307X/29/5/054215

摘要

A high-quality heralded single-photon source (HSPS) at 1.5 μm is experimentally demonstrated based on spontaneous four wave-mixing in a piece of dispersion-shifted fiber cooled by liquid nitrogen.To improve the up-limit of the preparation efficiency of the HSPS,commercial dense wavelength-division multiplexing components are used to reduce the loss of the filtering and splitting system between the fiber and the single-photon detectors.As a result,a preparation efficiency of 80％ is realized under a g(2)(0) of 0.06 in our HSPS experimental system,which is the best performance for the fiber-based HSPS at 1.5 μm reported so far.