Superresolution imaging with multiparameter quantum metrology in passive remote sensing

Köse, Emre; Braun, Daniel

doi:10.1103/physreva.107.032607

Phys. Rev. A

2023

DOI: 10.1103/physreva.107.032607

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Superresolution imaging with multiparameter quantum metrology in passive remote sensing

Emre Köse

Daniel Braun

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2024

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Cited by 4 publications

References 93 publications

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Enhancing Gaussian quantum metrology with position-momentum correlations

Porto,

Marinho,

Dieguez

et al. 2024

Phys. Scr.

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Quantum metrology offers significant improvements in several quantum technologies. In this work, we propose a Gaussian quantum metrology protocol assisted by initial position-momentum correlations (PM). We employ a correlated Gaussian wave packet as a probe to examine the dynamics of Quantum Fisher Information (QFI) and purity based on PM correlations to demonstrate how to estimate the PM correlations and, more importantly, to unlock its potential applications such as a resource to enhance quantum thermometry. In the low-temperature regime, we find an improvement in the thermometry of the surrounding environment when the original system exhibits a non-null initial correlation (correlated Gaussian state). In addition, we explore the connection between the loss of purity and the gain in QFI during the process of estimating the effective environment coupling and its effective temperature.

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Enhancing Gaussian quantum metrology with position-momentum correlations

Porto,

Marinho,

Dieguez

et al. 2024

Phys. Scr.

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Applications of model-aware reinforcement learning in Bayesian quantum metrology

Belliardo,

Zoratti,

Giovannetti

2024

Phys. Rev. A

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Quantum-limited superresolution of two arbitrary incoherent point sources: Beating the resurgence of Rayleigh's curse

Li,

Pang

2024

Phys. Rev. A

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Superresolution has been demonstrated to overcome the limitation of Rayleigh's criterion and achieve significant precision improvement in resolving the separation of two incoherent optical point sources. However, in recent years, it was found that, if the photon numbers of two incoherent optical sources are unknown, the precision of superresolution vanishes when the photon numbers are actually different. In this work, we first analyze in detail the estimation precision of the separation for two incoherent optical sources with the same point-spread functions and show that, when the two photon numbers are different but sufficiently close, the superresolution can still be realized but with different precisions. We find the condition on how close the photon numbers need to be to realize the superresolution and derive the precision of superresolution in different regimes of the photon number difference. We further consider the superresolution for two incoherent optical sources with different point-spread functions and show that the competition between the difference of photon numbers, the difference of point-spread functions, and the separation of source locations determines the precision of superresolution. The results exhibit precision limits distinct from that of two identical point-spread functions with equal photon numbers and extend the realizable regimes of quantum superresolution. Finally, the results are illustrated by Gaussian point-spread functions. Published by the American Physical Society 2024

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Superresolution imaging with multiparameter quantum metrology in passive remote sensing

Cited by 4 publications

References 93 publications

Enhancing Gaussian quantum metrology with position-momentum correlations

Enhancing Gaussian quantum metrology with position-momentum correlations

Applications of model-aware reinforcement learning in Bayesian quantum metrology

Quantum-limited superresolution of two arbitrary incoherent point sources: Beating the resurgence of Rayleigh's curse

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