Robust high-fidelity teleportation of an atomic state through the detection of cavity decay

Details Robust high-fidelity teleportation of an atomic state through the detection of cavity decay Robust high-fidelity teleportation of an atomic state through the detection of cavity decay

2003-11-08

arxiv.org/abs/quant-ph/0311046v1

Physics

Quantum Physics

6 pages, 5 figures

Scientific paper

10.1103/PhysRevA.70.014302

We propose a scheme for quantum teleportation of an atomic state based on the detection of cavity decay. The internal state of an atom trapped in a cavity can be disembodiedly transferred to another atom trapped in a distant cavity by measuring interference of polarized photons through single-photon detectors. In comparison with the original proposal by S. Bose, P.L. Knight, M.B. Plenio, and V. Vedral [Phys. Rev. Lett. 83, 5158 (1999)], our protocol of teleportation has a high fidelity of almost unity, and inherent robustness, such as the insensitivity of fidelity to randomness in the atom's position, and to detection inefficiency. All these favorable features make the scheme feasible with the current experimental technology.

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