Remote sensing of a levitated superconductor with a flux-tunable microwave cavity

Autor(en)

Philip Schmidt, Remi Claessen, Gerard Higgins, Joachim Hofer, Jannek J. Hansen, Peter Asenbaum, Martin Zemlicka, Kevin Uhl, Reinhold Kleiner, Rudolf Gross, Hans Huebl, Michael Trupke, Markus Aspelmeyer

Abstrakt

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.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Österreichische Akademie der Wissenschaften (ÖAW), Chalmers University of Technology, IST Austria - Institute of Science and Technology, Eberhard Karls Universität Tübingen, Bayerische Akademie der Wissenschaften, Technische Universität München, Munich Center for Quantum Science and Technology (MCQST)

Journal

Physical Review Applied

Band

22

Anzahl der Seiten

17

ISSN

2331-7019

DOI

https://doi.org/10.1103/PhysRevApplied.22.014078

Publikationsdatum

07-2024

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik, 103033 Supraleitung

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/1d31cbc6-afd0-4a1a-b8a4-b31006ec9904