Experimental realization of entanglement sudden death and rebirth at room temperature in diamond

ORAL

Abstract

We experimentally demonstrate the dynamics of entangled quantum states under different noise environments using the electron-nuclear spin system in diamond operating at room temperature. We use multi-pulse sequences that dynamically suppress or resonantly amplify the interactions with $^{13}C$ spin bath to control the local environment of the electron spin. By way of the concurrence, we show that dissipation of electron spin into the spin bath leads to sudden death of entanglement. Furthermore, by selectively amplifying certain part of the interactions, we observe rebirth of entanglement after the sudden death.

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Presenters

  • Fei Wang

    • Center for Quantum Information, IIIS, Tsinghua University
    • Tsinghua Univ

Authors

  • Fei Wang

    • Center for Quantum Information, IIIS, Tsinghua University
    • Tsinghua Univ

  • Panyu Hou

    • Center for Quantum Information, IIIS, Tsinghua University
    • Tsinghua Univ
    • Institute for Interdisciplinary Information Sciences, Tsinghua University
    • IIIS, Center for Quantum Information

  • Yuanyuan Huang

    • Center for Quantum Information, IIIS, Tsinghua University
    • Tsinghua Univ

  • Wengang Zhang

    • Center for Quantum Information, IIIS, Tsinghua University
    • Tsinghua Univ
    • IIIS, Center for Quantum Information

  • Luming Duan

    • Department of Physics, University of Michigan
    • Tsinghua Univ
    • Department of Physics, Univ of Michigan - Ann Arbor
    • Tsinghua University
    • IIIS, Center for Quantum Information
    • University of Michigan