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Journal of Yanbian University

Transfer of an Unknown Quantum State via Cavity Quantum Electrodynamics

Shou Zhang

Published Jan 1, 2009• 0 citations
OpenAlex

Abstract

We propose a scheme to transfer a zero-and one photon superposed state from one mode to another of the same bimodal cavity by the resonant interaction of a three-level atom and a bimodal cavity.The scheme,which has a successful probability of 100 percent,does not require Bell-state measurement and performing any operations to reconstruct an initial state.

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We propose a scheme to transfer a zero-and one photon superposed state from one mode to another of the same bimodal cavity by the resonant interaction of a three-level atom and a bimodal cavity.The scheme,which has a successful probability of 100 percent,does not require Bell-state measurement and performing any operations to reconstruct an initial state.
In this paper, we propose a scheme for transferring an unknown atomic entangled state via cavity quantum electrodynamics (QED). This scheme, which has a successful probability of 100 percent, does not require Bell-state measurement and performing any operations to reconstruct an initial state. Meanwhile, the scheme only involves atom–field interaction with a large detuning and does not require the transfer of quantum information between the atoms and cavity. Thus the scheme is insensitive to the cavity field states and cavity decay. This scheme can also be extended to transferring an entangled state of n-atom.
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.