Zhuang, Quntao and Pirandola, Stefano orcid.org/0000-0001-6165-5615 (2020) Entanglement-enhanced testing of multiple quantum hypotheses. Communications Physics. 103. ISSN 2399-3650
Abstract
Quantum hypothesis testing has been greatly advanced for the binary discrimination of two states, or two channels. In this setting, we already know that quantum entanglement can be used to enhance the discrimination of two bosonic channels. Here, we remove the restriction of binary hypotheses and show that entangled photons can remarkably boost the discrimination of multiple bosonic channels. More precisely, we formulate a general problem of channel-position finding where the goal is to determine the position of a target channel among many background channels. We prove that, using entangled photons at the input and a generalized form of conditional nulling receiver at the output, we may outperform any classical strategy. Our results can be applied to enhance a range of technological tasks, including the optical readout of sparse classical data, the spectroscopic analysis of a frequency spectrum, and the determination of the direction of a target at fixed range.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s) 2020 |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Computer Science (York) |
Depositing User: | Pure (York) |
Date Deposited: | 02 Jun 2020 13:10 |
Last Modified: | 16 Oct 2024 16:39 |
Published Version: | https://doi.org/10.1038/s42005-020-0369-4 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1038/s42005-020-0369-4 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:161476 |