19 February 2014 Quantum dot spin-photon entanglement and photon-to-spin teleportation
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Entanglement plays a central role in fundamental tests of quantum mechanics as well as in the burgeoning field of quantum information processing. Particularly in the context of quantum networks and communication, a major challenge is the efficient generation of entanglement between stationary (spin) and flying (photon) qubits. Here we report the observation of quantum entanglement between a semiconductor quantum dot spin and the color of a propagating optical photon. As an extension experiment, we report the generation of a single-photon frequency qubit, interference of resonance fluorescence from two distant quantum dots and the teleportation from a flying photon to a quantum dot spin.
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W. B. Gao, W. B. Gao, P. Fallahi, P. Fallahi, E. Togan, E. Togan, A. Delteil, A. Delteil, Y. S. Chin, Y. S. Chin, J. Miguel-Sanchez, J. Miguel-Sanchez, A. Imamoglu, A. Imamoglu, "Quantum dot spin-photon entanglement and photon-to-spin teleportation", Proc. SPIE 8997, Advances in Photonics of Quantum Computing, Memory, and Communication VII, 89970W (19 February 2014); doi: 10.1117/12.2043139; https://doi.org/10.1117/12.2043139

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