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Quantum teleportation of light beams

T. C. Zhang·K. W. Goh·C. W. Chou·P. Lodahl·H. J. Kimble
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Abstract

We experimentally demonstrate quantum teleportation for continuous variables using squeezed-state entanglement. The teleportation fidelity for a real experimental system is calculated explicitly, including relevant imperfection factors such as propagation losses, detection inefficiencies and phase fluctuations. The inferred fidelity for input coherent states is F = 0.61 +- 0.02, which when corrected for the efficiency of detection by the output observer, gives a fidelity of 0.62. By contrast, the projected result based on the independently measured entanglement and efficiencies is 0.69. The teleportation protocol is explained in detail, including a discussion of discrepancy between experiment and theory, as well as of the limitations of the current apparatus.

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T. C. Zhang, K. W. Goh, C. W. Chou, P. Lodahl, H. J. Kimble. 2002-07-12. Quantum teleportation of light beams. https://doi.org/10.1103/physreva.67.033802

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