Quantum-based vacuum metrology at NIST
arXiv:1805.06928 · doi:10.1116/1.5033568
Abstract
The measurement science in realizing and disseminating the unit for pressure in the International System of Units (SI), the pascal (Pa), has been the subject of much interest at the National Institute of Standards and Technology (NIST). Modern optical-based techniques for pascal metrology have been investigated, including multi-photon ionization and cavity ringdown spectroscopy. Work is ongoing to recast the pascal in terms of quantum properties and fundamental constants and in so doing, make vacuum metrology consistent with the global trend toward quantum-based metrology. NIST has ongoing projects that interrogate the index of refraction of a gas using an optical cavity for low vacuum, and count background particles in high vacuum to extreme high vacuum using trapped laser-cooled atoms.
arXiv comment49 pages, 11 figures, review article
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Cited by in corpus (11)
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- Centimeter-scale nanomechanical resonators with low dissipation
- Universal probability distributions of scattering observables in ultracold molecular collisions
- Light-induced atomic desorption of lithium
- Gas equilibration gas modulation refractometry (GEq-GAMOR) for assessment of pressure with sub-ppm precision
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