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Journal of Atomic and Molecular Physics

Quantum entanglement of distant particles via adiabatic passage

Xiyao Chen

Published Jan 1, 2007• 0 citations
OpenAlex

Abstract

A scheme for quantum entanglement of distant particles via adiabatic passage is proposed.When a Λ-type atom interacts with laser and cavity fields adiabatically,the state of the system evolves in a dark state.As the entanglement of distant atoms or cavities is implemented adiabatically,the proposal is robust to atomic spontaneous emission noise.The biggest success probability is 0.5.

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A scheme for quantum entanglement of distant particles via adiabatic passage is proposed.When a Λ-type atom interacts with laser and cavity fields adiabatically,the state of the system evolves in a dark state.As the entanglement of distant atoms or cavities is implemented adiabatically,the proposal is robust to atomic spontaneous emission noise.The biggest success probability is 0.5.
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.