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Journal of Fujian Normal University

Preparation of Entangled States for Many ■-type Three-level Atoms

Hongcai Li

Published Jan 1, 2006• 0 citations
OpenAlex

Abstract

A scheme for preparation of the maximal entangled states for Ξ-type three-level atoms in a thermal cavity is proposed.Because of preparing the maximal entangled states by the simultaneous nonresonant interaction between many uniform multilevel atoms and a single-mode cavity,the thermal effects and the decay of the cavity are all eliminated.It also suggests a scheme for preparation of the maximal entangled states for four-level atoms in a thermal cavity.

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理论物理通讯：英文版•Jan 1, 2002•0 citations
A scheme for preparation of the maximal entangled states for Ξ-type three-level atoms in a thermal cavity is proposed.Because of preparing the maximal entangled states by the simultaneous nonresonant interaction between many uniform multilevel atoms and a single-mode cavity,the thermal effects and the decay of the cavity are all eliminated.It also suggests a scheme for preparation of the maximal entangled states for four-level atoms in a thermal cavity.
A scheme is suggested for the generation of multi-atom maximally entangled states with a cavity in a thermal state. In this scheme several appropriately prepared two-level atoms are simultaneously sent through the nonresonant cavity. We divide the whole atom-cavity interaction time into two equal parts. At the end of the first part a π pulse is applied to the atoms using a classical field. Then the photon-number-dependent shifts on the atomic states are cancelled and the atomic system finally evolves to a maximally entangled state.
A scheme is suggested for the generation of multi-atom maximally entangled states with a cavity in a thermalstate. In this scheme several appropriately prepared two-level atoms are simultaneously sent through the nonresonantcavity. We divide the whole atom-cavity interaction time into two equal parts. At the end of the first part a π pulse isapplied to the atoms using a classical field. Then the photon-number-dependent shifts on the atomic states are cancelledand the atomic system finally evolves to a maximally entangled state.
A scheme is suggested for the generation of multi-atom maximally entangled states with a cavity in a thermalstate. In this scheme several appropriately prepared two-level atoms are simultaneously sent through the nonresonantcavity. We divide the whole atom-cavity interaction time into two equal parts. At the end of the first part a π pulse isapplied to the atoms using a classical field. Then the photon-number-dependent shifts on the atomic states are cancelledand the atomic system finally evolves to a maximally entangled state.