Sequential Quantum Teleportation of Optical Coherent States

Abstract

We demonstrate a sequence of two quantum teleportations of optical coherent states, combining two high-fidelity teleporters for continuous variables. In our experiment, the individual teleportation fidelities are evaluated as F_1 = 0.70 \pm 0.02 and F_2 = 0.75 \pm 0.02, while the fidelity between the input and the sequentially teleported states is determined as F^{(2)} = 0.57 \pm 0.02. This still exceeds the optimal fidelity of one half for classical teleportation of arbitrary coherent states and almost attains the value of the first (unsequential) quantum teleportation experiment with optical coherent states.

5page, 4figures

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Cited by in corpus (8)

• Experimental generation of four-mode continuous-variable cluster states
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• Gain tuning for continuous-variable quantum teleportation of discrete-variable states
• Nonlocal quantum gate on quantum continuous variables with minimum resources
• Mixed state localizable entanglement for continuous variables
• Experimental characterization of the Gaussian state of squeezed light obtained via single-passage through an atomic vapor