Roadmap on Weak Measurements in Optics

Abstract Even though weak measurements and weak value amplification (WVA) are founded on the principles of quantum mechanics and quantum measurements, these have found widespread applications in optics due to their inherent origin in wave interference. Besides their use in addressing foundational qu...

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Main Authors: Ritwik Dhara, Niladri Modak, Shyamal Guchhait, Nirmalya Ghosh
Format: Article
Language:English
Published: Wiley-VCH 2025-04-01
Series:Advanced Physics Research
Subjects:
Online Access:https://doi.org/10.1002/apxr.202400136
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author Ritwik Dhara
Niladri Modak
Shyamal Guchhait
Nirmalya Ghosh
author_facet Ritwik Dhara
Niladri Modak
Shyamal Guchhait
Nirmalya Ghosh
author_sort Ritwik Dhara
collection DOAJ
description Abstract Even though weak measurements and weak value amplification (WVA) are founded on the principles of quantum mechanics and quantum measurements, these have found widespread applications in optics due to their inherent origin in wave interference. Besides their use in addressing foundational questions of quantum mechanics or for resolving quantum paradoxes, weak measurements and WVA have thus been used for numerous metrological applications, e.g., quantification of small optical beam displacement, tiny angular rotation, determination of extremely small phase shifts, spectral shifts, unraveling weak fundamental optical effects, improved optical imaging, amplifying weak signal and extracting small physical parameters and so forth. In this review, after providing the mathematical foundation of weak measurement and WVA, some of the metrological applications of weak measurements in the classical optics domain are briefly summarized, and the controversies and debates on the potential advantages of WVA in the estimation and detection of weak signal are discussed, and the interferometric philosophy of WVA is elucidated. The experimental weak measurement and WVA schemes in the domain of quantum optics are also discussed and highlighted the new perspectives and emerging trends of weak measurements in both the classical and quantum optics domain and their prospects in the development of next‐generation ultra‐sensitive optical devices.
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spelling doaj-art-de719744bc8d4337ab36e07b9ecb07f32025-08-20T02:09:33ZengWiley-VCHAdvanced Physics Research2751-12002025-04-0144n/an/a10.1002/apxr.202400136Roadmap on Weak Measurements in OpticsRitwik Dhara0Niladri Modak1Shyamal Guchhait2Nirmalya Ghosh3Department of Physical Sciences IISER Kolkata Mohanpur 741246 IndiaPhotonics Laboratory, Physics Unit Tampere University Tampere 33720 FinlandDepartment of Physical Sciences IISER Kolkata Mohanpur 741246 IndiaDepartment of Physical Sciences IISER Kolkata Mohanpur 741246 IndiaAbstract Even though weak measurements and weak value amplification (WVA) are founded on the principles of quantum mechanics and quantum measurements, these have found widespread applications in optics due to their inherent origin in wave interference. Besides their use in addressing foundational questions of quantum mechanics or for resolving quantum paradoxes, weak measurements and WVA have thus been used for numerous metrological applications, e.g., quantification of small optical beam displacement, tiny angular rotation, determination of extremely small phase shifts, spectral shifts, unraveling weak fundamental optical effects, improved optical imaging, amplifying weak signal and extracting small physical parameters and so forth. In this review, after providing the mathematical foundation of weak measurement and WVA, some of the metrological applications of weak measurements in the classical optics domain are briefly summarized, and the controversies and debates on the potential advantages of WVA in the estimation and detection of weak signal are discussed, and the interferometric philosophy of WVA is elucidated. The experimental weak measurement and WVA schemes in the domain of quantum optics are also discussed and highlighted the new perspectives and emerging trends of weak measurements in both the classical and quantum optics domain and their prospects in the development of next‐generation ultra‐sensitive optical devices.https://doi.org/10.1002/apxr.202400136classical opticsquantum opticsweak measurement
spellingShingle Ritwik Dhara
Niladri Modak
Shyamal Guchhait
Nirmalya Ghosh
Roadmap on Weak Measurements in Optics
Advanced Physics Research
classical optics
quantum optics
weak measurement
title Roadmap on Weak Measurements in Optics
title_full Roadmap on Weak Measurements in Optics
title_fullStr Roadmap on Weak Measurements in Optics
title_full_unstemmed Roadmap on Weak Measurements in Optics
title_short Roadmap on Weak Measurements in Optics
title_sort roadmap on weak measurements in optics
topic classical optics
quantum optics
weak measurement
url https://doi.org/10.1002/apxr.202400136
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