Experimental Realization of Three-Color Entanglement at Optical Fiber Communication and Atomic Storage Wavelengths
Experimental Realization of Three-Color Entanglement at Optical Fiber Communication and Atomic Storage Wavelengths
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光纤通信和原子存储波长下三色纠缠的实验实现
DOI：
10.1103/physrevlett.109.253604
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发表时间：
2012-12-18
影响因子：
8.6
通讯作者：
Peng, Kunchi
中科院分区：
文献类型：
--
作者：
Jia, Xiaojun;Yan, Zhihui;Peng, Kunchi
包括低损耗光纤传输和原子共振频率在内的光的纠缠态是未来量子信息网络必不可少的资源。介绍了在852、1550和1440 nm波长下连续变量三色纠缠产生的实验结果。纠缠产生系统由两个级联的非简并光学参量振荡器（NOPO）组成。两种NOPO中非线性晶体的灵活选择性和NOPO的可调谐特性为三束纠缠光的频率选择提供了很大的自由度。该系统有望成为一种实用的纠缠源，应用于具有原子存储单元和长光纤传输线的量子信息网络。
Entangled states of light including low-loss optical fiber transmission and atomic resonance frequencies are essential resources for future quantum information networks. We present the experimental achievement on the three-color entanglement generation at 852, 1550, and 1440 nm wavelengths for optical continuous variables. The entanglement generation system consists of two cascaded nondegenerated optical parametric oscillators (NOPOs). The flexible selectivity of nonlinear crystals in the two NOPOs and the tunable property of NOPO provide large freedom for the frequency selection of three entangled optical beams. The presented system will hopefully be developed as a practical entangled source to be used in quantum-information networks with atomic storage units and long fiber transmission lines.