Remote sensing of a levitated superconductor with a flux-tunable microwave cavity
Artikel i vetenskaplig tidskrift, 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.
Författare
P. Schmidt
Osterreichische Akademie Der Wissenschaften
Remi Claessen
Universität Wien
Gerard Higgins
Osterreichische Akademie Der Wissenschaften
Chalmers, Mikroteknologi och nanovetenskap, Kvantteknologi
J. Hofer
Universität Wien
Osterreichische Akademie Der Wissenschaften
Jannek J. Hansen
Universität Wien
Peter Asenbaum
Osterreichische Akademie Der Wissenschaften
Martin Zemlicka
Institute of Science and Technology Austria
K. Uhl
Center for Quantum Science (CQ) and LISA+
R. Kleiner
Center for Quantum Science (CQ) and LISA+
R. Gross
MCQST
Walther-Meissner-Institut für Tieftemperaturforschung
Technische Universität München
H. Huebl
Walther-Meissner-Institut für Tieftemperaturforschung
MCQST
Technische Universität München
M. Trupke
Osterreichische Akademie Der Wissenschaften
M. Aspelmeyer
Universität Wien
Osterreichische Akademie Der Wissenschaften
Physical Review Applied
2331-7019 (eISSN)
Vol. 22 1 014078Att testa kvantfysik på outforskat territorium med hjälp av en magneto-mekanisk oscillator
Vetenskapsrådet (VR) (2020-00381), 2020-07-01 -- 2023-06-30.
Exploring nonclassical states of center-of-mass mechanical motion with superconducting magneto- and levitomechanics
Europeiska kommissionen (EU) (EC/HE/101080143), 2022-10-01 -- 2026-09-30.
Ämneskategorier
Atom- och molekylfysik och optik
Den kondenserade materiens fysik
DOI
10.1103/PhysRevApplied.22.014078