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arXiv:1209.5493 · Journal of the Optical Society of America B

Generation of multilevel maximally entangled states under large atom-cavity detuning

Peng Shi, Libo Chen, Yongjian Gu, Wendong Li

Published Mar 11, 2013• 2 citations
arXivHTMLPDF

Abstract

We propose theoretical schemes to deterministically generate both qubit and qutrit maximally entangled states of atoms by passing two Rb87 atoms through a high-Q bimode cavity successively. The atomic spontaneous decay is efficiently suppressed because of large atom-cavity detuning in our schemes. Strict numerical simulation shows that, although the cavity decay exists unavoidably, our proposal is good enough to generate atomic maximal entanglements with high fidelity and within the current experimental technologies.

DOI
10.1364/josab.30.000889

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We propose theoretical schemes to deterministically generate both qubit and qutrit maximally entangled states of atoms by passing two Rb87 atoms through a high-Q bimode cavity successively. The atomic spontaneous decay is efficiently suppressed because of large atom-cavity detuning in our schemes. Strict numerical simulation shows that, although the cavity decay exists unavoidably, our proposal is good enough to generate atomic maximal entanglements with high fidelity and within the current experimental technologies.
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We propose a scheme to generate four-mode multiphoton entangled states by passing NNN identical atoms through two high-QQQ cavities in turn. In the case of N=1N=1N=1, the scheme can deterministically generate Einstein-Podosky-Rosen entangled photon pairs. We use adiabatical state evolution under large atom-cavity detuning, so the scheme is insensitive to atomic spontaneous decay. The influence of cavity decay on fidelity and success probability is also discussed.
We present a scheme to generate entangled state of two multilevel atoms in a high-Q optical cavity. In the protocol, the selective atom-field interaction is highly controlled, which can yield a resonant interaction inside one selected atom-field subspace and leave the others in a highly dispersive regime. The atomic spontaneous emission is efficiently suppressed via the large atom-field detuning. Simultaneously, the proposal only requires commonly addressing on atoms inside the cavity, which reduces the difficulties of experiment.
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