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Advanced materials research

Scalable Generation of Three-Atom W States via Atom-Microtoroidal Cavity Coupling System

Yan Tang Huang, Xiaohua Wang, 鲍日焰

Published Feb 1, 2013• 0 citations
Publisher

Abstract

We propose a scheme for the generation of three atom W states via the microtoroidal cavity-atom coupling system. This scheme can also be generalized to multi-atom W states. In this paper, three-atom resonant interact simultaneously with two counterpropagating cavity modes which can be produced by embedding Bragg grating in the microtoroidal. A single resonant interaction is required, thus this scheme is simple. Moreover, the required time to complete the whole process almost unchanges with increasing the number of atoms

DOI
10.4028/www.scientific.net/amr.662.543

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This paper proposes a simple scheme for generating a three-atom GHZ state via cavity quantum electrodynamics (QED). The task can be achieved through the interaction between two EPR states, which can be prepared easily with current technology. In this scheme, the cavity field is only virtually excited during the interaction process, and no quantum information transfer between the atoms and the cavity is required. Thus it greatly prolongs the efficient decoherent time. Moreover, this scheme is also applicable for generating an N -atom GHZ state.