量子电子学报, 2011, 28 (4): 407, 网络出版: 2011-07-29
纠缠相干态的制备
Entangled coherent states: generation
量子光学 量子纠缠 相干态 腔QED quantum optics quantum entanglement coherent states cavity quantum electrodynamics
摘要
提出了一个利用单一的二能级原子和处于相干态的腔模来制备Bell型和簇型纠缠相干态的方案。并对这两种纠缠相干态进行了讨论。让一个单一的二能级原子 和两个Ramsey zones以及两个处于相干态的腔模相互作用,并通过原子测量,就可以在分离的腔中实现Bell型纠缠相干态的制备。通过增加Ramsey zones和腔模就可以制备簇型纠缠相干态。原子和每个腔模的相互作用时间均为,其中是原子和腔的有效耦合常数。最后讨论了方案 实验上的可行性。
Abstract
A scheme of generating the Bell-type and cluster-type entangled coherent states (ECSs) via a single two-level atom and cavity modes initially prepared in coherent states is proposed. Discussions on the two ECSs are presented. When the atom interacts separately with two Ramsey zones and two cavity modes, the generation of Bell-type ECSs in separate cavities is realized after an atomic measurement. By adding the Ramsey zones and cavity modes, the cluster-type ECSs can be generated. The interaction time between the atom and cavity modes are all , where is the effective atom-cavity coupling constant. At last the experimental feasibility of such proposal is discussed.
何带果, 董裕力, 方建兴, 钱丽, 胡洁. 纠缠相干态的制备[J]. 量子电子学报, 2011, 28(4): 407. HE Dai-guo, DONG Yu-li, FANG Jian-xing, QIAN Li, HU Jie. Entangled coherent states: generation[J]. Chinese Journal of Quantum Electronics, 2011, 28(4): 407.