Nonlinear Interferometry for Quantum-Enhanced Measurements of Multiphoton Absorption
Panahiyan S, Muñoz CS, Chekhova MV, Schlawin F (2023)
Publication Type: Journal article
Publication year: 2023
Journal
Book Volume: 130
Article Number: 203604
Journal Issue: 20
DOI: 10.1103/PhysRevLett.130.203604
Abstract
Multiphoton absorption is of vital importance in many spectroscopic, microscopic, or lithographic applications. However, given that it is an inherently weak process, the detection of multiphoton absorption signals typically requires large field intensities, hindering its applicability in many practical situations. In this Letter, we show that placing a multiphoton absorbent inside an imbalanced nonlinear interferometer can enhance the precision of multiphoton cross section estimation with respect to strategies based on photon-number measurements using coherent or even squeezed light directly transmitted through the medium. In particular, the power scaling of the sensitivity with photon flux can be increased by 1 order compared with transmission measurements of the sample with coherent light, such that the measurement precision at any given intensity can be greatly enhanced. Furthermore, we show that this enhanced measurement precision is robust against experimental imperfections leading to photon losses, which usually tend to degrade the detection sensitivity. We trace the origin of this enhancement to an optimal degree of squeezing which has to be generated in a nonlinear SU(1,1) interferometer.
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Additional Organisation(s)
Involved external institutions
Max-Planck-Instituts für Struktur und Dynamik der Materie (MPSD) / Max Planck Institute for the Structure and Dynamics of Matter
Germany (DE)
Universidad Autónoma de Madrid (UAM)
Spain (ES)
Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light
Germany (DE)
Germany (DE)
Universidad Autónoma de Madrid (UAM)
Spain (ES)
Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light
Germany (DE)
How to cite
APA:
Panahiyan, S., Muñoz, C.S., Chekhova, M.V., & Schlawin, F. (2023). Nonlinear Interferometry for Quantum-Enhanced Measurements of Multiphoton Absorption. Physical Review Letters, 130(20). https://doi.org/10.1103/PhysRevLett.130.203604
MLA:
Panahiyan, Shahram, et al. "Nonlinear Interferometry for Quantum-Enhanced Measurements of Multiphoton Absorption." Physical Review Letters 130.20 (2023).
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