| CLASSICAL AREAS OF PHENOMENOLOGY |
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Nonlinear interactions and quantum entanglement for collective fields in near-resonantly driven systems |
| Zhang Xiu(张秀)a)b), Hu Xiang-Ming(胡响明)a)†, Zhang Xue-Hua(张雪华)a), and Wang Fei(王飞)a) |
| a Department of Physics, Huazhong Normal University, Wuhan 430079, China; b Department of Physics, Xiaogan University, Xiaogan 432000, China |
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Abstract This paper proposes a novel form of multimode nonlinear interactions by using a near-resonantly dressed atomic ensemble in an optical cavity. Due to quantum interference, a pair of collective fields come into the bilinear interactions, whose strengths are proportional to the population difference between dressed states which are coupled to the collective fields. By such an interaction, it is possible to obtain perfect multimode squeezing and collective Einstein–Podolsky–Rosen (EPR) entanglement in the cavity output.
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Received: 14 April 2010
Revised: 19 May 2010
Accepted manuscript online:
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PACS:
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42.50.Dv
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(Quantum state engineering and measurements)
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42.50.Gy
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(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
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42.65.Lm
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(Parametric down conversion and production of entangled photons)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 60778005). |
Cite this article:
Zhang Xiu(张秀), Hu Xiang-Ming(胡响明), Zhang Xue-Hua(张雪华), and Wang Fei(王飞) Nonlinear interactions and quantum entanglement for collective fields in near-resonantly driven systems 2010 Chin. Phys. B 19 124204
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