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arXiv · 0911.0588

Large Kerr nonlinearities on cavity-atom polaritons

Yifu Zhu
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Abstract

I analyze a scheme that is capable of producing large Kerr nonlinearities on cavity-atom polaritons in a cavity QED system consisting of multiple three-level atoms confined in a cavity mode. A weak control laser coupled to the atoms from free space induces destructive quantum interference in the polariton excitation of the coupled cavity-atom system and creates large Kerr nonlinearities on the intra-cavity light field. The scheme can be used for optical switching or cross-phase modulation of the cavity-atom polariton at ultra-low light levels, which may be useful for applications in quantum state manipulation in cavity QED, quantum measurements, and quantum logic gates.

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Yifu Zhu. 2009-11-03. Large Kerr nonlinearities on cavity-atom polaritons. https://doi.org/10.1364/ol.35.000303

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