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PUBLICATIONS

Collision-resolved pressure sensing

Published

Author(s)

Daniel Carney, Daniel Barker, Thomas W. LeBrun, David Moore, Jacob Taylor

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

Download Paper

https://doi.org/10.1103/PhysRevA.109.042616
Local Download
Pressure and vacuum metrology, Physics, Metrology and Atomic / molecular / quantum

Citation

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 October 8, 2025)

Issues

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Created April 11, 2024, Updated August 8, 2024
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