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

Oral-In-person

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.

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Presenters

  • Jayameenakshi Venkatraman

    • University of California, Santa Barbara

Authors

  • Jayameenakshi Venkatraman

    • University of California, Santa Barbara

  • Casey Kim

  • Alexander Nazeeri

  • Damien Kemna

  • Elizabeth Panner

    • Tufts University

  • Mikhail Mamaev

  • Zhiran Zhang

  • Hawkins Clay

  • Aled Cuda

  • Martin Koppenhöfer

  • Benjamin Mazin

  • Patrice Bertet

    • CEA-Saclay

  • David Schuster

    • Stanford University / SLAC National Accelerator Laboratory

  • Aashish Clerk

    • University of Chicago

  • Ania Jayich

    • University of California, Santa Barbara