Room-temperature storage of quantum entanglement using decoherence-free subspace in a solid-state spin system

F. Wang; Y. -Y. Huang; Z. -Y. Zhang; C. Zu; P. -Y. Hou; X. -X. Yuan; W. -B. Wang; W. -G. Zhang; L. He; X. -Y. Chang; L. -M. Duan

doi:10.1103/PhysRevB.96.134314

Room-temperature storage of quantum entanglement using decoherence-free subspace in a solid-state spin system

Quantum Physics 2017-11-15 v2

Authors: F. Wang , Y. -Y. Huang , Z. -Y. Zhang , C. Zu , P. -Y. Hou , X. -X. Yuan , W. -B. Wang , W. -G. Zhang , L. He , X. -Y. Chang , L. -M. Duan

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Abstract

We experimentally demonstrate room-temperature storage of quantum entanglement using two nuclear spins weakly coupled to the electronic spin carried by a single nitrogen-vacancy center in diamond. We realize universal quantum gate control over the three-qubit spin system and produce entangled states encoded within the decoherence-free subspace of the two nuclear spins. By injecting arbitrary collective noise, we demonstrate that the decoherence-free entangled state has coherence time longer than that of other entangled states by an order of magnitude in our experiment.

Keywords

quantum spin systems quantum entanglement dynamics quantum thermodynamics

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@article{arxiv.1706.03313,
  title  = {Room-temperature storage of quantum entanglement using decoherence-free subspace in a solid-state spin system},
  author = {F. Wang and Y. -Y. Huang and Z. -Y. Zhang and C. Zu and P. -Y. Hou and X. -X. Yuan and W. -B. Wang and W. -G. Zhang and L. He and X. -Y. Chang and L. -M. Duan},
  journal= {arXiv preprint arXiv:1706.03313},
  year   = {2017}
}

Room-temperature storage of quantum entanglement using decoherence-free subspace in a solid-state spin system

Abstract

Keywords

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