Remote sensing of a levitated superconductor with a flux-tunable microwave cavity
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866910549732753408 |
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| author | Schmidt, Philip Claessen, Remi Higgins, Gerard Hofer, Joachim Hansen, Jannek J. Asenbaum, Peter Uhl, Kevin Kleiner, Reinhold Gross, Rudolf Huebl, Hans Trupke, Michael Aspelmeyer, Markus |
| author_facet | Schmidt, Philip Claessen, Remi Higgins, Gerard Hofer, Joachim Hansen, Jannek J. Asenbaum, Peter Uhl, Kevin Kleiner, Reinhold Gross, Rudolf Huebl, Hans Trupke, Michael Aspelmeyer, Markus |
| contents | We present a cavity-electromechanical system comprising a superconducting quantum interference device which is embedded in a microwave resonator and coupled via a pick-up loop to a 6 $μ$g 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 $10^{-7} \, \mathrm{m} / \sqrt{\mathrm{Hz}}$, defines a path towards ground-state cooling of levitated particles with Planck-scale masses at millikelvin environment temperatures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_08854 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Remote sensing of a levitated superconductor with a flux-tunable microwave cavity Schmidt, Philip Claessen, Remi Higgins, Gerard Hofer, Joachim Hansen, Jannek J. Asenbaum, Peter Uhl, Kevin Kleiner, Reinhold Gross, Rudolf Huebl, Hans Trupke, Michael Aspelmeyer, Markus Quantum Physics Mesoscale and Nanoscale Physics We present a cavity-electromechanical system comprising a superconducting quantum interference device which is embedded in a microwave resonator and coupled via a pick-up loop to a 6 $μ$g 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 $10^{-7} \, \mathrm{m} / \sqrt{\mathrm{Hz}}$, defines a path towards ground-state cooling of levitated particles with Planck-scale masses at millikelvin environment temperatures. |
| title | Remote sensing of a levitated superconductor with a flux-tunable microwave cavity |
| topic | Quantum Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2401.08854 |