njp_18_7_073033.pdf (1.03 MB)
A search algorithm for quantum state engineering and metrology
Version 2 2023-06-12, 08:29
Version 1 2023-06-09, 01:51
journal contribution
posted on 2023-06-12, 08:29 authored by P A KnottIn this paper we present a search algorithm that finds useful optical quantum states which can be created with current technology. We apply the algorithm to the field of quantum metrology with the goal of finding states that can measure a phase shift to a high precision. Our algorithm efficiently produces a number of novel solutions: we find experimentally-ready schemes to produce states that show significant improvements over the state-of-the-art, and can measure with a precision that beats the shot noise limit by over a factor of 4. Furthermore, these states demonstrate a robustness to moderate/high photon losses, and we present a conceptually simple measurement scheme that saturates the Cramer-Rao bound.
History
Publication status
- Published
File Version
- Published version
Journal
New Journal of PhysicsISSN
1367-2630Publisher
IOP PublishingExternal DOI
Volume
18Page range
073033Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2016-06-23First Open Access (FOA) Date
2016-11-09First Compliant Deposit (FCD) Date
2016-06-23Usage metrics
Categories
No categories selectedLicence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC