Electromagnetic control of nonclassicality in cavity QED system

Abstract

We present a study of the electromagnetic control of nonclassicality of the outgoing light field in a single atom cavity QED system. By exploring the energy eigenvalues and eigenstates, we show that the eigenstates are similar to the Jaynes-Cummings ladder of eigenstates and can be optically controlled by an external control field. Tuning the control field frequency to the one photon resonance, we show the superbunching behavior in the outgoing light field can be observed at the frequency of one photon resonance. We also show that there exists a magic control field intensity at which two photon blockade phenomenon can be significantly improved. In particular, it is possible to adjust the nonclassicality of the outgoing field from quantum to classical by varying the control field intensity. The work presented here provides an optical method to control statistical features of the outgoing field and can be useful for the nonclassical light generation, quantum gate operation and exotic quantum state generation.

arXiv comment6 pages, 6 figures,43 references

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Cited by in corpus (8)

• Multiphoton blockade in the two-photon Jaynes-Cummings model
• Enhancement of photon blockade effect via quantum interference
• Photon blockade with a trapped $\Lambda$-type three-level atom in asymmetrical cavity
• Retrieval of photon blockade effect in the dispersive Jaynes-Cummings model
• Nonreciprocal photon blockade induced by parametric amplification in an asymmetrical cavity
• Multiphoton blockade and antibunching in an optical cavity coupled with dipole-dipole interacting $\Lambda$-type atoms
• Optical normal-mode-induced phonon-sideband splitting in photon-blockade effect
• Negativity-Mutual Information conversion and coherence in two-coupled harmonic oscillators