量子电子学报, 2010, 27 (5): 554, 网络出版: 2010-12-07
不同光学腔中远距离原子间量子相位门的实现
Conditional quantum controlled-phase gate between distant atoms in optical cavities
量子光学 受控相位门 腔量子电动力学 消相干 quantum optics controlled-phase gate cavity quantum electrodynamics decoherence
摘要
提出了一个实现处在不同光学腔中的远距离原子之间的量子受控相位门方案，通过利用光子的稳定性和原子-光子在光学腔中的强耦合作用, 得到了不同原子间的 幺正演化操作。该方案不受腔中光子衰减和原子自发辐射产生的消相干影响, 使受控相位门操作具有高保真度。
Abstract
A scheme is proposed to implement a quantum controlled-phase gate between two four-level atoms inside the different optical cavities. The scheme combines the advantage of scalability from the photon and power of strong atom-photon coupling, which yields the desired unitary evolution operation. The scheme is immune to decoherence due to cavity photon decay and atomic spontaneous emission, and the operation is implemented probabilistically with a very high fidelity.
樊洋, 李定国. 不同光学腔中远距离原子间量子相位门的实现[J]. 量子电子学报, 2010, 27(5): 554. FAN Yang, LI Ding-guo. Conditional quantum controlled-phase gate between distant atoms in optical cavities[J]. Chinese Journal of Quantum Electronics, 2010, 27(5): 554.
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