Superfluid Optomechanics: Coupling of a Superfluid to a Superconducting Condensate
Quantum Physics
2013-08-12 v1 Other Condensed Matter
Optics
Abstract
We investigate the low loss acoustic motion of superfluid He parametrically coupled to a very low loss, superconducting Nb, TE 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 . At higher temperatures, the lowest dissipation modes are limited by an intrinsic three phonon process. Acoustic quality factors approaching 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.
Keywords
Cite
@article{arxiv.1308.2164,
title = {Superfluid Optomechanics: Coupling of a Superfluid to a Superconducting Condensate},
author = {L. A. DeLorenzo and K. C. Schwab},
journal= {arXiv preprint arXiv:1308.2164},
year = {2013}
}