Carney, D.
, Barker, D.
, LeBrun, T.
, Moore, D.
and Taylor, J.
(2024),
Collision-resolved pressure sensing, Physical Review A, [online], https://doi.org/10.1103/PhysRevA.109.042616, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=935871
(Accessed April 10, 2025)
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Collision-resolved pressure sensing
Published
Author(s)
Daniel Carney, , , David Moore,
Abstract
Heat and pressure are ultimately transmitted via quantized degrees of freedom, like gas particles and phonons. While a continuous Brownian description of these noise sources is adequate to model measurements with relatively long integration times, sufficiently precise measurements can resolve the detailed time dependence coming from individual bath-system interactions. Here, we propose the use of nanomechanical devices operated with impulse readout sensitivity around the "standard quantum limit" to sense ultra-low pressures by directly counting these individual environmental collisions. We illustrate this in two paradigmatic model systems: an optically levitated nanobead and a tethered membrane system in a phononic bandgap shield.Citation
Physical Review A
Volume
109
Pub Type
Journals
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Created April 11, 2024, Updated August 8, 2024