Single-Spin Magnetomechanics with Levitated Micromagnets

POSTER

Abstract

Coupling quantum nonlinearities to mechanics is an outstanding challenge in the field of quantum science. Realizing such a system would prove useful for applications in quantum metrology and quantum information. We demonstrate a new levitated system consisting of micromagnets over a type-II superconductor. The magnet's center of mass is shown to be trapped in three dimensions, resulting in modes at more than 10 kHz and quality factors of ~10^6. Additionally, the modes can be tuned by adjusted the conditions of the system before cooldown. We also demonstrate the coupling of the levitated magnet to the spin of a single nitrogen-vacancy center in diamond, ~0.048(2) Hz. This proof-of-principle is the first step towards a spin-mechanics system in coupling regimes relevant for quantum applications.

*This work was supported by the NSF, the Center for Ultracold Atoms (CUA), the ONR MURI Quantum OptoMechanics with Atoms and Nanostructured Diamond (QOMAND), the Vannever Bush Faculty Fellowship, and the Moore Foundation. This material is based upon work supported by the National Science Foundation Graduate Research Fellowship Program under Grants No. DGE1144152 and No. DGE1745303. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. J. G. was supported by the European Union (SEQOO, H2020-MSCA-IF-2014, No. 655369). A. K. and A. S. were supported by the Department of Defense (DOD) through the National Defense Science and Engineering Graduate Fellowship (NDSEG) Program. C. G. B. was supported by the European Union (PWAQUTEC, H2020-MSCA-IF-2017 No. 796725). This work was performed in part at the Center for Nanoscale Systems (CNS), a member of the National

Publication: Single-Spin Magnetomechanics with Levitated Micromagnets
J. Gieseler, A. Kabcenell, E. Rosenfeld, J.?D. Schaefer, A. Safira, M.?J.?A. Schuetz, C. Gonzalez-Ballestero, C.?C. Rusconi, O. Romero-Isart, and M.?D. Lukin
Phys. Rev. Lett. 124, 163604 – Published 24 April 2020

Presenters

  • John D Schaefer

    • Harvard University

Authors

  • John D Schaefer

    • Harvard University

  • Emma Rosenfeld

    • Harvard University

  • Trisha Madhavan

    • Harvard University

  • Frankie Fung

    • Harvard University

  • Alexis Mulski

    • Harvard University

  • Mikhail Lukin

    • Harvard University