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Quantum memory with strong and controllable Rydberg-level interactions

Author

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  • Lin Li

    (University of Michigan)

  • A Kuzmich

    (University of Michigan)

Abstract

Realization of distributed quantum systems requires fast generation and long-term storage of quantum states. Ground atomic states enable memories with storage times in the range of a minute, however their relatively weak interactions do not allow fast creation of non-classical collective states. Rydberg atomic systems feature fast preparation of singly excited collective states and their efficient mapping into light, but storage times in these approaches have not yet exceeded a few microseconds. Here we demonstrate a system that combines fast quantum state generation and long-term storage. An initially prepared coherent state of an atomic memory is transformed into a non-classical collective atomic state by Rydberg-level interactions in less than a microsecond. By sheltering the quantum state in the ground atomic levels, the storage time is increased by almost two orders of magnitude. This advance opens a door to a number of quantum protocols for scalable generation and distribution of entanglement.

Suggested Citation

  • Lin Li & A Kuzmich, 2016. "Quantum memory with strong and controllable Rydberg-level interactions," Nature Communications, Nature, vol. 7(1), pages 1-5, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13618
    DOI: 10.1038/ncomms13618
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    Cited by:

    1. Zhao, Yuan & Huang, Qihong & Gong, Tixian & Xu, Siliu & Li, Zeping & Malomed, Boris A., 2024. "Three-dimensional solitons supported by the spin–orbit coupling and Rydberg–Rydberg interactions in PT-symmetric potentials," Chaos, Solitons & Fractals, Elsevier, vol. 187(C).

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