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Acta Sinica Quantum Optica

Preparation of Three-atom Entangled W StateVia Two-photon Jaynes-Cummings Model

Kehui Song

Published Jan 1, 2002• 0 citations
OpenAlex

Abstract

A scheme is presented to produce an entangled three-atom W state by means of two-photon Jaynes-Cummings model. It is shown that such a state can easily be obtained by controlling the interaction time of atom-cavity-field. It is pointed out that this model is more advantageous in generating tripartite particle entangled W state than in GHZ state. In addition, an analysis of the experimental feasibility is presented within the realm of cavity QED.

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Communications in Theoretical Physics•Feb 1, 2018•2 citations
A scheme is presented to produce an entangled three-atom W state by means of two-photon Jaynes-Cummings model. It is shown that such a state can easily be obtained by controlling the interaction time of atom-cavity-field. It is pointed out that this model is more advantageous in generating tripartite particle entangled W state than in GHZ state. In addition, an analysis of the experimental feasibility is presented within the realm of cavity QED.
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.
Abstract Using a system of cavity quantum electrodynamics (QED) we present two schemes for multipartite entanglement generation. In the first scheme, a three-level atom is interacting with three cavities successively. In the second one, two three-level atoms are interacted with a coherent optical cavity. These protocols allow us to generate the six classes of tripartite entanglement (GHZ, W, A-B-C, AB-C, C-AB, and B-AC class states) by controling the interaction time between atoms and cavities. Moreover, they allow us to generate entanglement between the cavity fields degrees of freedom (from the first scheme), and a mixed entanglement between the cavity field degrees of freedom and the atomic degrees of freedom.