Resonant Adiabatic Passages of Spin Qubits

ORAL

Abstract

We study adiabatic quantum teleportation through a spin chain with XX and Heisenberg couplings. We show that an adiabatic quantum teleportation protocol on a three-spin chain can be mapped exactly onto two parallel and coherent adiabatic passage channels, one for each spin orientation. When the time evolution is non-adiabatic, the information transfer displays a series of resonances where perfect transmission fidelity is achieved. This resonant operation is both fast and robust, indicating a possible new route for implementing robust quantum gates between spin qubits.

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Authors

  • Sangchul Oh

    Department of Physics, University at Buffalo, State University of New York, Department of Physics, University at Buffalo, The State University of New York, University at Buffalo, SUNY

  • Yun-Pil Shim

    Department of Physics, University of Wisconsin-Madison, University of Wisconsin-Madison

  • Mark Friesen

    Department of Physics, University of Wisconsin-Madison, University of Wisconsin-Madison

  • Xuedong Hu

    Department of Physics, University at Buffalo, SUNY, University at Buffalo, The State University of New York, Department of Physics, University at Buffalo, State University of New York, Department of Physics, University at Buffalo, The State University of New York, University at Buffalo, SUNY, SUNY at Buffalo