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Superfluid Optomechanics: Coupling of a Superfluid to a Superconducting Condensate

De Lorenzo, L. A. and Schwab, K. C. (2013) Superfluid Optomechanics: Coupling of a Superfluid to a Superconducting Condensate. New Journal of Physics, 16 . Art. No. 113020. ISSN 1367-2630. doi:10.1088/1367-2630/16/11/113020.

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We investigate the low loss acoustic motion of superfluid ^4He parametrically coupled to a very low loss, superconducting Nb, TE_(011) microwave resonator, forming a gram-scale, sideband resolved, optomechanical system. We demonstrate the detection of a series of acoustic modes with quality factors as high as 7⋅10^6. At higher temperatures, the lowest dissipation modes are limited by an intrinsic three phonon process. Acoustic quality factors approaching 10^(11) may be possible in isotopically purified samples at temperatures below 10 mK. A system of this type may be utilized to study macroscopic quantized motion and as an ultra-sensitive sensor of extremely weak displacements and forces, such as continuous gravity wave sources.

Item Type:Article
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URLURL TypeDescription Paper
Schwab, K. C.0000-0001-8216-4815
Additional Information:© 2014 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Received 30 June 2014, revised 12 September 2014. Accepted for publication 6 October 2014. Published 11 November 2014. Submitted on 9 Aug 2013. We would like to acknowledge helpful conversations with Rana Adhikari. We acknowledge funding provided by the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center(NSF IQIM-1125565) with support of the Gordon and Betty Moore Foundation (GBMF-1250) NSF DGE-1144469, NSF DMR-1052647,DARPA-QUANTUM HR0011-10-1-0066.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
Gordon and Betty Moore FoundationGBMF-1250
Defense Advanced Research Projects Agency (DARPA)HR0011-10-1-0066
Subject Keywords:superfluid, quantum measurement, gravity wave experiments
Record Number:CaltechAUTHORS:20140515-161526294
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45782
Deposited By: Joy Painter
Deposited On:16 May 2014 20:07
Last Modified:12 Jul 2022 19:43

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