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, 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

Chair of Technical Physics

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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
Journal	Physical Review Applied
Volume	22
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevApplied.22.014078
State	Published - Jul 2024

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10.1103/PhysRevApplied.22.014078

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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

PY - 2024/7

Y1 - 2024/7

N2 - 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.

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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VL - 22

JO - Physical Review Applied

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ER -

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

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