Zanforlin, U., Lupo, C., Connolly, P.W.R. et al. (3 more authors) (2023) Quantum super-resolution imaging and hypothesis testing. In: Figer, D.F. and Reimer, M., (eds.) Photonics for Quantum 2023. Photonics for Quantum 2023, 05-09 Jun 2023, Rochester, New York, United States. Proceedings of SPIE, 12633 . Society of Photo-optical Instrumentation Engineers (SPIE)
Abstract
Detecting the faint emission of a secondary source in the proximity of the much brighter one has been the most severe obstacle for using direct imaging in searching for exoplanets. Estimating the angular separation between two incoherent thermal sources is a also challenging task for direct imaging. Here, we experimentally demonstrate two tasks for super-resolution imaging based on hypothesis testing, quantum state discrimination and quantum imaging techniques. We show that one can significantly reduce the probability of error for detecting the presence of a weak secondary source (e.g. a planet), especially when the two sources have small angular separations. We reduce the experimental complexity down to a single two-input interferometer: we show that (1) this simple set-up is suffficient for the state discrimination task, and (2) if the two sources are of equal brightness, then this measurement can super-resolve their angular separation, saturating the quantum Cramér-Rao bound. By using a collection baseline of 5.3 mm, we resolve the angular separation of two sources that are placed 15 µm apart at a distance of 1.0 m with an accuracy of 1:7% - this is between 2 to 3 orders of magnitudes more accurate than shot-noise limited direct imaging.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Editors: |
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Copyright, Publisher and Additional Information: | © 2023 SPIE. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | super-resolution; quantum imaging; quantum metrology |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematical and Physical Sciences |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Oct 2024 14:27 |
Last Modified: | 08 Oct 2024 14:30 |
Status: | Published |
Publisher: | Society of Photo-optical Instrumentation Engineers (SPIE) |
Series Name: | Proceedings of SPIE |
Refereed: | Yes |
Identification Number: | 10.1117/12.2671840 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:218101 |