A comparison between quantum and classical noise radar sources

Robert Jonsson, Roberto Di Candia, Martin Ankel, Anders Strom, Goran Johansson

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We compare the performance of a quantum radar based on two-mode squeezed states with a classical radar system based on correlated thermal noise. With a constraint of equal number of photons NS transmitted to probe the environment, we find that the quantum setup exhibits an advantage with respect to its classical counterpart of √2 in the cross-mode correlations. Amplification of the signal and the idler is considered at different stages of the protocol, showing that no quantum advantage is achievable when a large-enough gain is applied, even when quantum-limited amplifiers are available. We also characterize the minimal type-II error probability decay, given a constraint on the type-I error probability, and find that the optimal decay rate of the type-II error probability in the quantum setup is ln(1 + 1/N S) larger than the optimal classical setup, in the NS« 1 regime. In addition, we consider the Receiver Operating Characteristic (ROC) curves for the scenario when the idler and the received signal are measured separately, showing that no quantum advantage is present in this case. Our work characterizes the trade-off between quantum correlations and noise in quantum radar systems.

Original languageEnglish
Title of host publication2020 IEEE Radar Conference, RadarConf 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728189420
DOIs
StatePublished - 21 Sep 2020
Externally publishedYes
Event2020 IEEE Radar Conference, RadarConf 2020 - Florence, Italy
Duration: 21 Sep 202025 Sep 2020

Publication series

NameIEEE National Radar Conference - Proceedings
Volume2020-September
ISSN (Print)1097-5659

Conference

Conference2020 IEEE Radar Conference, RadarConf 2020
Country/TerritoryItaly
CityFlorence
Period21/09/2025/09/20

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