Open AccessRealistic model of entanglement-enhanced sensing in optical fibers
Author(s) -
Gregory Krueper,
Charles Yu,
Stephen B. Libby,
R. J. Mellors,
Lior Cohen,
Juliet T. Gopinath
Publication year - 2022
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.451058
Subject(s) - quantum entanglement , physics , interferometry , noise (video) , quantum key distribution , shot noise , optics , optical fiber , photon , sensitivity (control systems) , quantum sensor , quantum noise , photon entanglement , quantum limit , detector , quantum , computer science , quantum network , quantum mechanics , electronic engineering , engineering , artificial intelligence , image (mathematics)
Experimental limitations such as optical loss and noise have prevented entanglement-enhanced measurements from demonstrating a significant quantum advantage in sensitivity. Holland-Burnett entangled states can mitigate these limitations and still present a quantum advantage in sensitivity. Here we model a fiber-based Mach-Zehnder interferometer with internal loss, detector efficiency, and external phase noise and without pure entanglement. This model features a practical fiber source that transforms the two-mode squeezed vacuum (TMSV) into Holland-Burnett entangled states. We predict that a phase sensitivity 28% beyond the shot noise limit is feasible with current technology. Simultaneously, a TMSV source can provide about 25 times more photon flux than other entangled sources. This system will make fiber-based quantum-enhanced sensing accessible and practical for remote sensing and probing photosensitive materials.
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