Deterministic and storable single-photon source based on a quantum memory
Deterministic and storable single-photon source based on a quantum memory
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DOI：
10.1103/physrevlett.97.173004
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发表时间：
2006-10-27
影响因子：
8.6
通讯作者：
Pan, Jian-Wei
中科院分区：
文献类型：
--
作者：
Chen, Shuai;Chen, Yu-Ao;Pan, Jian-Wei
用冷原子系综（Rb-87原子）实现了单光子源。通过激光脉冲的拉曼散射写入原子量子存储器中的单个激发在预定时间被确定性地恢复为单个光子。结果表明，在保持单光子质量不变的情况下，反馈电路可以显著提高单光子的产生率。这种单光子源非常适合于未来大规模实现量子通信和线性光量子计算。
A single-photon source is realized with a cold atomic ensemble (Rb-87 atoms). A single excitation, written in an atomic quantum memory by Raman scattering of a laser pulse, is retrieved deterministically as a single photon at a predetermined time. It is shown that the production rate of single photons can be enhanced considerably by a feedback circuit while the single-photon quality is conserved. Such a single-photon source is well suited for future large-scale realization of quantum communication and linear optical quantum computation.