Entangled Radiation through an Atomic Reservoir Controlled by Coherent Population Trapping |
| |
| Authors: | Li Qian ZHONG Wen-Xue HU Xiang-Ming |
| |
| Affiliation: | Department of Physics, Huazhong Normal University, Wuhan 430079 |
| |
| Abstract: | We show that it is possible to generate Einstein--Podolsky--Rosen (EPR) entangled radiation using an atomic reservoir controlled by coherent population trapping. A beam of three-level atoms is initially prepared in near-coherent population trapping (CPT) state and acts as a long-lived coherence-controlled reservoir. Four-wave mixing leads to amplification of cavity modes resonant with Rabi sidebands of the atomic dipole transitions. The cavity modes evolve into an EPR state, whose degree of entanglement is controlled by the intensities and the frequencies of the driving fields. This scheme uses the long-lived CPT coherence and is robust against spontaneous emission of the atomic beam. At the same time, this scheme is implemented in a one-step procedure, not in a two-step procedure as was required in Phys. Rev. Lett. 98(2007)240401. |
| |
| Keywords: | 42 50 Dv 42 50 Gy 42 50 Lc 42 50 Pq |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理快报》浏览原始摘要信息 |
|
点击此处可从《中国物理快报》下载免费的PDF全文 |
