Telecom quantum networking with a silicon-vacancy center in diamond

ORAL

Abstract

Silicon-vacancy centers in diamond (SiVs) are a promising platform for quantum information applications. Efficient spin photon interfaces realized by coupling SiVs to photonic crystal cavities have enabled demonstrations of memory enhanced quantum key distribution, efficient single photon generation, and entanglement of optically distinguishable emitters. In particular, long electronic spin coherence times and access to nuclear ancilla qubits make SiVs an ideal candidate for use as memories in quantum networks. However, the SiV's 737 nm optical transition experiences strong attenuation in optical fibers, restricting the ability to transmit quantum states over long distances. In this talk, we report on progress towards deployed quantum networking with SiVs in a metropolitan-scale fiber network. We utilize low-noise quantum frequency conversion to realize an interface between SiVs and telecommunication-wavelength photons in the O-band, an important step towards the realization of quantum repeaters based on solid state quantum emitters.

*This work was supported by the NSF, CUA, DOE, AFOSR, the NSF Center for Quantum Networks, and the AWS Center for Quantum Networking. Devices were fabricated in the Harvard University Center for Nanoscale Systems (CNS), a member of the NNCI, NSF award no. 1541959. MS and EB acknowledge support from the NASA Space Technology Graduate Research Fellowship Program, YQH acknowledges support from the A*STAR NSS, and ENK and DA acknowledge support from the NSF GRFP.

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Presenters

  • Maddie Sutula

    • Harvard University

Authors

  • Maddie Sutula

    • Harvard University

  • Eric A Bersin

    • Massachusetts Institute of Technology MIT

  • Yan Qi Huan

    • Harvard University

  • Daniel R Assumpcao

    • Harvard University

  • Yan-Cheng Wei

    • Harvard University

  • Pieter-Jan C Stas

    • Harvard University

  • Aziza Suleymanzade

    • Harvard University
    • University of Chicago

  • Can M Knaut

    • Harvard University

  • Erik Knall

    • Harvard University

  • Bartholomeus Machielse

    • Harvard University, AWS Center for Quantum Networking
    • AWS Center for Quantum Networking
    • AWS CQN, Harvard University
    • AWS Center for Quantum Networking, Harvard University
    • Harvard University

  • David Levonian

    • Harvard University, AWS Center for Quantum Networking
    • AWS CQN, Harvard University
    • AWS Center for Quantum Networking, Harvard University

  • Mihir K Bhaskar

    • Harvard University, AWS Center for Quantum Networking
    • AWS CQN, Harvard University
    • AWS Center for Quantum Networking, Harvard University

  • Denis D Sukachev

    • Harvard University, AWS Center for Quantum Networking
    • AWS CQN, Harvard University
    • AWS Center for Quantum Networking, Harvard University

  • Neil Sinclair

    • Harvard University; California Institute of Technology
    • Harvard University

  • Hongkun Park

    • Harvard University

  • Marko Lon?ar

    • Harvard University
    • Harvard

  • Mikhail D Lukin

    • Harvard University