Mach-Zehnder interferometer using frequency-domain beamsplitter
Mach-Zehnder interferometer using frequency-domain beamsplitter
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DOI：
10.1364/oe.25.012052
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发表时间：
2017-05-15
期刊：
影响因子：
3.8
通讯作者：
Imoto, Nobuyuki
中科院分区：
文献类型：
--
作者：
Kobayashi, Toshiki;Yamazaki, Daisuke;Imoto, Nobuyuki
本文利用频域马赫-曾德干涉仪（MZI）研究了1580 nm和795 nm的相干光之间的一阶干涉。基于二阶非线性光学效应，在强泵浦光的周期极化铌酸锂波导中采用两个频域BSs实现了MZI。在50%的BSs转换效率下，观测到的能见度超过0.99。在光子量子信息处理中，需要足够小的背景光子速率。从超导单光子探测器（SSPD）的测量结果出发，讨论了频域MZI在量子态下的可行性。我们的估计表明，在实际设置下，能见度在0.9以上的单光子干涉是可行的。(C) 2017年美国光学学会
We demonstrate a first-order interference between coherent light at 1580 nm and 795 nm by using a frequency-domain Mach-Zehnder interferometer (MZI). The MZI is implemented by two frequency-domain BSs based on a second-order nonlinear optical effect in a periodically-poled lithium niobate waveguide with a strong pump light. The observed visibility is over 0.99 at 50% conversion efficiencies of the BSs. Toward photonic quantum information processing, sufficiently small background photon rate is necessary. From measurement results with a superconducting single photon detector (SSPD), we discuss the feasibility of the frequency-domain MZI in a quantum regime. Our estimation shows that the single photon interference with the visibility above 0.9 is feasible with practical settings. (C) 2017 Optical Society of America