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Controllable Entanglement of Lights in a Five-Level System

Yun Li·Chao Hang·Lei Ma·Guoxiang Huang
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Abstract

We analyze the nonlinear optical response of a five-level system under a novel configuration of electro-magnetically induced transparency. We show that a giant Kerr nonlinearity with a relatively large cross-phase modulation coefficient that occurs in such system may be used to produce an efficient photon-photon entanglement. We demonstrate that such photon-photon entanglement is practically controllable and hence facilitates promising applications in quantum information and computation.

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Yun Li, Chao Hang, Lei Ma, Guoxiang Huang. 2005-11-16. Controllable Entanglement of Lights in a Five-Level System. https://doi.org/10.1016/j.physleta.2006.01.015

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