Remote sensing of a levitated superconductor with a flux-tunable microwave cavity
Journal article, 2024
We present a cavity-electromechanical system comprising a superconducting quantum interference device which is embedded in a microwave resonator and coupled via a pickup loop to a 6-μg magnetically levitated superconducting sphere. The motion of the sphere in the magnetic trap induces a frequency shift in the SQUID-cavity system. We use microwave spectroscopy to characterize the system, and we demonstrate that the electromechanical interaction is tunable. The measured displacement sensitivity of 10-7m/Hz defines a path towards ground-state cooling of levitated particles with Planck-scale masses at millikelvin environment temperatures.
Author
P. Schmidt
Austrian Academy of Sciences
Remi Claessen
University of Vienna
Gerard Higgins
Austrian Academy of Sciences
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Technology
J. Hofer
Austrian Academy of Sciences
University of Vienna
Jannek J. Hansen
University of Vienna
Peter Asenbaum
Austrian Academy of Sciences
Martin Zemlicka
Institute of Science and Technology Austria
K. Uhl
University of Tübingen
R. Kleiner
University of Tübingen
R. Gross
MCQST
Technical University of Munich
Walther-Meissner-Institute for Low Temperature Research
H. Huebl
MCQST
Technical University of Munich
Walther-Meissner-Institute for Low Temperature Research
M. Trupke
Austrian Academy of Sciences
M. Aspelmeyer
Austrian Academy of Sciences
University of Vienna
Physical Review Applied
2331-7019 (eISSN)
Vol. 22 1 014078Exploring nonclassical states of center-of-mass mechanical motion with superconducting magneto- and levitomechanics
European Commission (EC) (EC/HE/101080143), 2022-10-01 -- 2026-09-30.
Testing quantum physics in uncharted territory using a magneto-mechanical oscillator
Swedish Research Council (VR) (2020-00381), 2020-07-01 -- 2023-06-30.
Subject Categories (SSIF 2011)
Atom and Molecular Physics and Optics
Condensed Matter Physics
DOI
10.1103/PhysRevApplied.22.014078
Related datasets
Data used in the article "Remote sensing of a levitated superconductor with a flux-tunable microwave cavity" [dataset]
DOI: 10.5281/zenodo.12701289