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Fuzhou daxue xuebao. Ziran kexue ban

Transferring atomic entangled states with a nonresonant atom-field interaction

Xia-Ping Jiang

Published Jan 1, 2008• 0 citations
OpenAlex

Abstract

A scheme is proposed for transferring two-atom entangled state and W state.It is based on the simultaneous nonresonant interaction of two atoms with a single-mode cavity field.During the transferring process,the atoms do not transfer quantum information with the cavity.The cavity is only virtually excited and thus the requirement on the quality factor of the cavity is greatly loosened.Atomic entangled state can be directly transferred to the atoms of receiver without performing any measurement.The successful probability is 100 percent.

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Journal of Atomic and Molecular Physics•Jan 1, 2007•0 citations
A scheme is proposed for transferring two-atom entangled state and W state.It is based on the simultaneous nonresonant interaction of two atoms with a single-mode cavity field.During the transferring process,the atoms do not transfer quantum information with the cavity.The cavity is only virtually excited and thus the requirement on the quality factor of the cavity is greatly loosened.Atomic entangled state can be directly transferred to the atoms of receiver without performing any measurement.The successful probability is 100 percent.
A scheme for the distant transfer of a qubit atomic state and atomic entangled states are presented.In the scheme,the identical two-level atoms interact simultaneously with a highly detuned cavity mode and are driven by a strong classical field,and the atomic state evolution is independent of cavity field state.Thus the scheme is insensitive to both the cavity decay and the thermal field and the requirement on the quality factor of the cavity is greatly loosened, which is of importance from the experimental point of view.
We propose a scheme for transferring of a two-mode entanglement of zero- or one-photon entangled states between two cavities via atom-cavity field resonant interaction. In our proposal, in order to transfer the entangled state, we only need two identical two-level atoms and a two-mode cavity for receiving the teleported state. This scheme does not require Bell-state measurement and performing any transformations to reconstruct the initial state. And the transfer can occur with 100% success probability in a simple manner. And a network for transferring of a two-mode entangled state between cavities is suggested. This scheme can also be extended to transfer N -mode entangled state of cavity.
We present a scheme for transferring an unknown atomic entangled state via atom-cavity field interaction.This proposal,which has success probability of unit,is mainly employing two atoms for receiving the teleported state,and a two-mode cavity as the quantum channel.The two modes of the cavity have different frequencies and polarizations.So the two modes are distinguished by their frequencies and their orthogonal polarizations,hence they occupy distinct regions in the cavity.The atom interacts resonantly with the mode of the cavity according to the Jaynes-Cummings Hamiltonian,and when interaction between the atom and one of the two modes takes place,the other mode remains unaffected.This scheme does not require Bell-state measurement and any operations to reconstruct the initial state.This scheme can also be extended to transfer entangled state of N-atom.