Skip to Main content Skip to Navigation
Journal articles

Entanglement and Sensitivity in Precision Measurements with States of a Fluctuating Number of Particles

Abstract : The concepts of separability, entanglement, spin squeezing, and the Heisenberg limit are central in the theory of quantum-enhanced metrology. In the current literature, these are well established only in the case of linear interferometers operating with input quantum states of a known fixed number of particles. This manuscript generalizes these concepts and extends the quantum phase estimation theory by taking into account classical and quantum fluctuations of the particle number. Our analysis concerns most of the current experiments on precision measurements where the number of particles is known only on average
Document type :
Journal articles
Complete list of metadatas

Cited literature [16 references]  Display  Hide  Download

https://hal-iogs.archives-ouvertes.fr/hal-00746823
Contributor : Marie-Laure Edwards <>
Submitted on : Monday, December 7, 2015 - 11:32:55 AM
Last modification on : Wednesday, September 16, 2020 - 5:45:30 PM
Long-term archiving on: : Saturday, April 29, 2017 - 5:18:03 AM

File

00746823.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Philipp Hyllus, Luca Pezzé, Augusto Smerzi. Entanglement and Sensitivity in Precision Measurements with States of a Fluctuating Number of Particles. Physical Review Letters, American Physical Society, 2010, 105 (12), pp.120501. ⟨10.1103/PhysRevLett.105.120501⟩. ⟨hal-00746823⟩

Share

Metrics

Record views

203

Files downloads

264