Magneto-optical rotation in cavity QED with Zeeman coherence |
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| Authors: | Hui Sun Xiaohua Jia Shuangli Fan Hongjun Zhang Hong Guo |
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| Institution: | 1. School of Physics and Information Technology, Shaanxi Normal University, Xi''an 710062, China;2. State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, and Center for Quantum Information Technology, Peking University, Beijing 100871, China |
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| Abstract: | We investigate theoretically the magneto-optical rotation in cavity QED system with atomic Zeeman coherence, which is established via coherent population trapping. Owing to Zeeman coherence, the ultranarrow transmission spectrum less than 1 MHz with gain can be achieved with a flat-top Faraday rotation angle. By controlling the parameters appropriately, the input probe components within the flat-top regime rotate with almost the same angle, and transmit through the cavity perpendicularly to the other components outside the flat-top regime. The concepts discussed here provide an important tool for perfect ultranarrow Faraday optical filter and quantum information processing. |
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| Keywords: | Magneto-optical rotation Zeeman coherence Cavity QED |
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