Quantum-memory-assisted multi-photon generation for efficient quantum information processing
Quantum-memory-assisted multi-photon generation for efficient quantum information processing
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DOI：
10.1364/optica.4.001034
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发表时间：
2017-09-20
期刊：
影响因子：
10.4
通讯作者：
Kwiat, Paul G.
中科院分区：
文献类型：
--
作者：
Kaneda, Fumihiro;Xu, Feihu;Kwiat, Paul G.
有效地制备大量但确定的光子数对于放大和加速光子量子信息处理具有重要意义。典型的基于非线性参数过程的单光子产生技术面临着概率产生的挑战。在这里，我们演示了使用量子存储器有效地同步来自多个非线性参数预告单光子源的光子。我们的低损耗光学存储器极大地提高了来自两个独立来源的符合光子的生成率(类似于30倍)，同时保持了同步光子的高不可分辨(95.7+/-1.4%)。作为应用，我们首次演示了基于参数源的测量设备无关的量子密钥分发。这里展示的同步技术为高效的量子通信和更大规模的光量子计算铺平了道路。(C)2017年美国光学学会
Efficient preparation of large, but definite, numbers of photons is of great importance for scaling up and speeding up photonic quantum information processing. Typical singlephoton generation techniques based on nonlinear parametric processes face challenges of probabilistic generation. Here we demonstrate efficient synchronization of photons from multiple nonlinear parametric heralded single-photon sources, using quantum memories. Our low-loss optical memories greatly enhance (similar to 30x) the generation rate of coincidence photons from two independent sources, while maintaining high indistinguishability (95.7 +/- 1.4%) of the synchronized photons. As an application, we perform the first demonstration of parametric-source-based measurement-deviceindependent quantum key distribution. The synchronization technique demonstrated here paves the way toward efficient quantum communication and larger-scale optical quantum computing. (C) 2017 Optical Society of America