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arXiv:quant-ph/0409194 · Optics Communications

Teleportation of atomic states via cavity quantum electrodynamics

E. S. Guerra

Published Sep 8, 2004• 12 citations
arXivHTMLPDF
DOI
10.1016/j.optcom.2004.08.034

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An alternative scheme is presented for teleportation of a two-atom entangled state in cavity quantum electrodynamics (QED). It is based on the resonant atom–cavity field interaction. In the scheme, only one cavity is involved, and the number of the atoms needed to be detected is decreased compared with the previous scheme. Since the resonant atom–cavity field interaction greatly reduces the interaction time, the decoherence effect can be effectively suppressed during the teleportation process. The experimental feasibility of the scheme is discussed. The scheme can easily be generalized to the teleportation of N-atom Greeninger–Horne–Zeilinger (GHZ) entangled states. The number of atoms needed to be detected does not increase as the number of the atoms in the GHZ state increases.
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A scheme for an arbitrary three-particle non-maximally entanglement W state as quantum channel is to achieve the controlled teleporting of two-particle,teleporting unknown quantum state form a sender to either of the two receivers.By the technology of cavity quantum electrodynamics,purifying the non-maximally entanglement state on cavity quantum electrodynamics is purified,the teleportation probability is realized.Transfer with the atoms through the catity resonance interaction to achieve the probability of an unknown quantum state transfer,machinery rather than the conduct of unitary transformation,has greater the feasibility.