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Communications in Theoretical Physics

Transferring a Multi-atom Entangled State via Adiabatic Passage

Lin Xiu, Chen Mei-Ying, Xiu‐Min Lin, Hongcai Li, Rong‐Can Yang

Published May 1, 2007• 1 citation
Publisher

Abstract

We present a scheme for transferring atomic entangled states via adiabatic passage. In the scheme, we use photons to achieve efficient quantum transmission among spatially distant atoms. The probability of the successful transferring quantum state approaches 1. Meanwhile, the scheme is robust against the effects of atomic spontaneous emission.

DOI
10.1088/0253-6102/47/5/010

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We present a scheme for transferring atomic entangled states via adiabatic passage. In the scheme, we use photons to achieve efficient quantum transmission among spatially distant atoms. The probability of the successful transferring quantum state approaches 1. Meanwhile, the scheme is robust against the effects of atomic spontaneous emission.
We propose a relatively robust scheme to implement quantum information transfer via adiabatic passage.When a Λ-type atom interacts with laser and cavity fields adiabatically,the state of the system evolves in a dark state.By the adiabatic passage,we can implement quantum information transfer of all the atomic states.Similarly,the scheme can be used to transfer a cavity mode state.The proposal is robust to restrain the atomic spontaneous emission noise,and transfers quantum information successfully.
A scheme is proposed for the generation of a two-atom entangled state and an N -atom W state in two distant cavities via adiabatic passage. In the scheme, since only laser fields applied to an atom need be changed, the property can effectively reduce the number of operations for implementing the scheme in experiment. And there are no excited states involved during the operation process, so the atom's spontaneous emission can be omitted approximately. Furthermore, the scheme is robust against the amplitude fluctuations of some experimental parameters.