Toward quantum-projection-noise-limited readout of a solid-state spinensemble in diamond

ORAL

Abstract

Among quantum sensing platforms, the nitrogen-vacancy (NV) center in

diamond stands out for its state-of-the-art spatial resolution and

magnetic field sensitivity. While single NV centers have demonstrated remarkable

performance, an ensemble of N spins offers, a potential sqrt(N)-fold

sensitivity enhancement in the absence of entanglement, and up-to

N-fold sensitivity enhancement in the presence of it. Leveraging this

entanglement-assisted enhancement, however, requires below

quantum-projection-noise-limited-readout —an outstanding challenge in

solid-state systems. We present theoretical and experimental progress

toward a superconducting circuit architecture for quantum-limited

readout of an NV spin ensemble in diamond via a microwave resonator.

Our results pave the way toward quantum-projection-noise-limited

sensing and many-body control of solid-state spins in a hybrid

architecture.

*This work was supported by the NSF Challenge Institute for Quantum Computation and the Army Research Office through the MURI program Grant No. W911NF-20-1-0136, and the Gordon and Betty Moore Foundation's EPiQS Initiative via Grant GBMF10279. We acknowledge the use of shared facilities of the UCSB Quantum Foundry through Q-AMASE-i program (NSF DMR-1906325)

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Presenters

  • Jayameenakshi Venkatraman

    • University of California, Santa Barbara

Authors

  • Jayameenakshi Venkatraman

    • University of California, Santa Barbara

  • Casey K Kim

    • University of California Santa Barbara
    • University of California, Santa Barbara

  • Alexander Nazeeri

    • University of California Santa Barbara

  • Damien Kemna

    • University of California Santa Barbara

  • Elizabeth Panner

    • University of California Santa Barbara

  • Mikhail Mamaev

    • University of Toronto
    • University of Chicago

  • Zhiran Zhang

    • University of Chicago

  • Hawkins Clay

    • University of California Santa Barbara

  • Aled Cuda

    • University of California Santa Barbara

  • Martin Koppenhoefer

    • Fraunhofer IAF
    • Fraunhofer Institute for Applied Solid State Physics, Freiburg, Germany
    • Fraunhofer Institute for Applied Solid State Physics

  • Benjamin Mazin

    • University of California Santa Barbara

  • Patrice Bertet

    • CEA Paris-Saclay
    • CEA-Saclay

  • David I Schuster

    • Stanford University / SLAC National Accelerator Laboratory
    • University of Chicago
    • Stanford

  • Aashish A Clerk

    • University of Chicago
    • University of Chicago, AWS Center for Quantum Computing
    • U Chicago

  • Ania Claire Jayich

    • University of California, Santa Barbara