Quantum retrodiction

Tools

Jeffers, John and Oi, Daniel K.L. and Brougham, Thomas (2024) Quantum retrodiction. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 382 (2287). 20230338. ISSN 1471-2962 (https://doi.org/10.1098/rsta.2023.0338)

[thumbnail of Jeffers-etal-PTRSA-2024-Quantum-retrodiction]
Preview
 Text. Filename: Jeffers-etal-PTRSA-2024-Quantum-retrodiction.pdf
Final Published Version
License: Creative Commons Attribution 4.0 logo
Download (644kB)| Preview

Abstract

Quantum retrodiction, in which the state of a quantum system prior to a measurement is assigned based on the results of that measurement, has had a long history and has been used in quantum optics research for decades. Here we summarize the theory and point out some of the more interesting results, before applying the theory to state identification from multiple shots of an experiment. One surprising result is that we show that a photodetector with low quantum efficiency can discriminate between photonic states better than a detector with a higher efficiency.

ORCID iDs

Jeffers, John ORCID logoORCID: https://orcid.org/0000-0002-8573-1675, Oi, Daniel K.L. ORCID logoORCID: https://orcid.org/0000-0003-0965-9509 and Brougham, Thomas;
  • Item type:Article
    ID code:90983
    Dates:
    Date
    Event
    30 December 2024
    Published
    24 December 2024
    Published Online
    16 July 2024
    Accepted
    Subjects:Science > Physics
    Science > Physics > Optics. Light
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:29 Oct 2024 16:17
    Last modified:17 Jan 2025 02:09
    URI:https://strathprints.strath.ac.uk/id/eprint/90983
CORE (COnnecting REpositories)