Optimal entanglement concentration via photonic Faraday rotation in cavity QED
Optimal entanglement concentration via photonic Faraday rotation in cavity QED
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DOI：
10.1016/j.optcom.2013.10.024
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发表时间：
2014-02
影响因子：
2.4
通讯作者：
Zhao-Hui Peng;J. Zou;Xiao-Juan Liu;L. Kuang
中科院分区：
文献类型：
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作者：
Zhao-Hui Peng;J. Zou;Xiao-Juan Liu;L. Kuang
提出了在腔QED系统中利用光子法拉第旋转实现光子或原子纠缠的最佳纠缠集中方案。结果表明，在原子或光子量子比特的辅助下，通过迭代浓缩过程，可以以最佳的成功概率浓缩光子或原子纠缠。结果表明，这些ECP在现有的腔QED技术下是可行的，因为它们工作在坏腔区，只涉及原子的虚激发，因此对腔衰减和原子自发辐射都不敏感。
We propose optimal entanglement concentration protocols (ECPs) for photonic or atomic entanglement via photonic Faraday rotation in cavity QED system. It is shown that with the assistance of atomic or photonic qubits, photonic or atomic entanglement can be concentrated with optimal successful probability by iterating the concentration procedure. It is indicated that these ECPs are feasible with current technology in cavity QED since they work in the bad cavity regime and only involve virtual excitations of atoms, so they are insensitive to both cavity decay and atomic spontaneous emission.