Measurement of quantum back action in the audio band at room temperature.
Journal
Nature
ISSN: 1476-4687
Titre abrégé: Nature
Pays: England
ID NLM: 0410462
Informations de publication
Date de publication:
04 2019
04 2019
Historique:
received:
11
04
2018
accepted:
15
01
2019
pubmed:
27
3
2019
medline:
27
3
2019
entrez:
27
3
2019
Statut:
ppublish
Résumé
Quantum mechanics places a fundamental limit on the precision of continuous measurements. The Heisenberg uncertainty principle dictates that as the precision of a measurement of an observable (for example, position) increases, back action creates increased uncertainty in the conjugate variable (for example, momentum). In interferometric gravitational-wave detectors, higher laser powers reduce the position uncertainty created by shot noise (the photon-counting error caused by the quantum nature of the laser) but necessarily do so at the expense of back action in the form of quantum radiation pressure noise (QRPN)
Identifiants
pubmed: 30911169
doi: 10.1038/s41586-019-1051-4
pii: 10.1038/s41586-019-1051-4
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
364-367Références
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