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quant-ph2025
Quantum Sensing of Gravitational Frame-Dragging with a Superfluid He Gyrometer
Kai-Isaak Ellers, Marios Christodoulou, K. C. Schwab +1
We propose a laboratory-scale experiment to locally measure the general relativistic frame-dragging effect on Earth using the macroscopic quantum properties of a novel superfluid $…
quant-ph2016
Ultra-high Q Acoustic Resonance in Superfluid 4He
L. A. DeLorenzo, K. C. Schwab
We report the measurement of the acoustic quality factor of a gram-scale, kilo-hertz frequency superfluid resonator, detected through the parametric coupling to a superconducting n…
quant-ph2013
Superfluid Optomechanics: Coupling of a Superfluid to a Superconducting Condensate
L. A. DeLorenzo, K. C. Schwab
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…