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

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

doi:10.1103/PhysRevApplied.22.014078

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

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

Quantum Science

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

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.

Original language	English
Article number	014078
Number of pages	17
Journal	Physical Review Applied
Volume	22
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevApplied.22.014078
Publication status	Published - Jul 2024

Funding

We gratefully acknowledge valuable discussions with Uros Delic, Lorenzo Magrini, and Corentin Gut. This work was supported by the European Union\u2019s Horizon 2020 research and innovation program under Grant No. 863132 (iQLev) and No. 101080143 (SuperMeQ), the European Research Council under Grant No. 951234 (ERC Synergy QXtreme), the Austrian and Bavarian Academy of Sciences (Topical Team SGQ), the Alexander von Humboldt Foundation through a Feodor Lynen Fellowship (P.S.), the Swedish Research Council under Grant No. 2020-00381 (G.H.), and the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via Germany\u2019s Excellence Strategy EXC-2111-390814868 (H.H., R.G.).

Austrian Fields of Science 2012

103025 Quantum mechanics
103033 Superconductivity

Access to Document

10.1103/PhysRevApplied.22.014078

Cite this

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title = "Remote sensing of a levitated superconductor with a flux-tunable microwave cavity",

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

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AU - Schmidt, Philip

AU - Claessen, Remi

AU - Higgins, Gerard

AU - Hofer, Joachim

AU - Hansen, Jannek J.

AU - Asenbaum, Peter

AU - Zemlicka, Martin

AU - Uhl, Kevin

AU - Kleiner, Reinhold

AU - Gross, Rudolf

AU - Huebl, Hans

AU - Trupke, Michael

AU - Aspelmeyer, Markus

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AB - 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.

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ER -

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

Abstract

Funding

Austrian Fields of Science 2012

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Q-Xtreme: Macroscopic Quantum Superpositions

IQLev: Inertial Sensing Based on Quantum-Enhanced Levitation Systems

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

Abstract

Funding

Austrian Fields of Science 2012

Access to Document

Other files and links

Fingerprint

Projects

Q-Xtreme: Macroscopic Quantum Superpositions

IQLev: Inertial Sensing Based on Quantum-Enhanced Levitation Systems

Cite this