Sensitive position magnetometry and quantum state control in a hybrid BEC-membrane system

ORAL

Abstract

The dynamics of a spinor BEC coupled magnetically to a high-Q mechanical membrane are studied theoretically. In particular, we investigate the effects of using phase-contrast imaging to observe the spin of the BEC. In the case of highly dispersive measurements, the Larmor frequency of the BEC can be found to high precision, and the shift in this frequency provides useful information about the motion of the membrane. On the other hand, for projective spin measurements, a large back-action is induced in the membrane, allowing in some cases the production of non-classical states of motion. We investigate the possibilities for cooling and heating, the production of Fock and cat states, and probabilistic state control of the membrane in this latter case.

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Authors

  • Steven Steinke

    B2 Institute, Department of Physics and College of Optical Sciences, The University of Arizona, Tucson, Arizona 85721, B2 Institute, Department of Physics, and College of Optical Sciences, The University of Arizona

  • Swati Singh

    B2 Institute, Department of Physics and College of Optical Sciences, The University of Arizona, Tucson, Arizona 85721, Department of Physics, College of Optical Sciences and B2 Institute, University of Arizona, B2 Institute, Department of Physics, and College of Optical Sciences, The University of Arizona

  • Mehmet Tasgin

    B2 Institute, Department of Physics, and College of Optical Sciences, The University of Arizona

  • Pierre Meystre

    Department of Physics, College of Optical Sciences and B2 Institute, University of Arizona, The University of Arizona, University of Arizona, B2 Institute, Department of Physics, and College of Optical Sciences, The University of Arizona

  • Keith Schwab

    Applied Physics, California Institute of Technology

  • Mukund Vengalattore

    Cornell University, Laboratory of Atomic and Solid State Physics, Cornell University