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arXiv:quant-ph/9908004 · Physical Review Letters

Proposal for Teleportation of an Atomic State via Cavity Decay

Sougato Bose, P. L. Knight, Martin Bodo Plenio, Vlatko Vedral

Published Dec 13, 1999• 462 citations
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Abstract

We show how the state of an atom trapped in a cavity can be teleported to a second atom trapped in a distant cavity simply by detecting photon decays from the cavities. This is a rare example of a decay mechanism playing a constructive role in quantum information processing. The scheme is comparatively easy to implement, requiring only the ability to trap a single three level atom in a cavity.

DOI
10.1103/physrevlett.83.5158

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We present a physical scheme to teleport an unknown atomic entangled state via cavity decay. In the teleportation process, four-particle Greenberger–Horne–Zeilinger (GHZ) state is used as quantum channel, and two unknown entangled atoms and two of four atoms in the four-particle GHZ state are trapped in four leaky cavities, respectively. Based on the joint detection of the photons leak out from the four cavities, we can teleport an unknown entangled state to two other remote atoms with certain probability and high fidelity.