Teleportation of electronic many-qubit states via single photons

ORAL

Abstract

We propose a teleportation scheme that relies only on single- photon measurements and Faraday rotation, for teleportation of many-qubit entangled states stored in the electron spins of a quantum dot system. The interaction between a photon and the two electron spins, via Faraday rotation in microcavities, establishes Greenberger-Horne-Zeilinger entanglement in the spin-photon-spin system. The appropriate single-qubit measurements, and the communication of two classical bits, produce teleportation. This scheme provides the essential link between spintronic and photonic quantum information devices by permitting quantum information to be exchanged between them.

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Authors

  • Michael Leuenberger

    University of California San Diego

  • Michael E. Flatt\'e

    University of Iowa, Phyisics Dept., University of Iowa, Department of Physics and Astronomy and Optical Science and Technology Center, University of Iowa, Iowa City, IA 52242, Optical Science and Technology Center and Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242

  • D.D. Awschalom

    University of California Santa Barbara, Department of Physics, University of California, Santa Barbara, CA 93106, Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA 93106