Quantum-Enhanced Multi-Phase Distributed Sensing with a tSU(1,1) Interferometer

Hong, Seongjin [Department of physics, Chung-Ang University]; Feldman, Matthew [ORNL] (ORCID:0000000240715284); Marvinney, Claire [ORNL]; Lee, Donghwa [Korea Institute of Science and Technology (KIST)]; Lee, Changhyoup [Korea Institute for Advanced Study (KIAS)] (ORCID:0000000214014230); Pooser, Raphael [Oak Ridge National Laboratory (ORNL)]; Marino Valle, Alberto [ORNL] (ORCID:0000000153771122)

doi:10.1364/quantum.2025.qm2c.4

DOE OSTI · 2584512

Quantum-Enhanced Multi-Phase Distributed Sensing with a tSU(1,1) Interferometer

Hong, Seongjin [Department of physics, Chung-Ang University]·Feldman, Matthew [ORNL] (ORCID:0000000240715284)·Marvinney, Claire [ORNL]·Lee, Donghwa [Korea Institute of Science and Technology (KIST)]·Lee, Changhyoup [Korea Institute for Advanced Study (KIAS)] (ORCID:0000000214014230)·Pooser, Raphael [Oak Ridge National Laboratory (ORNL)]·Marino Valle, Alberto [ORNL] (ORCID:0000000153771122)

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Abstract

We demonstrate the detection of a linear superposition of two distributed phases with a 1.7 dB quantum noise reduction using a tSU(1,1) interferometer. We extend the system theoretically to a multi-phase distributed sensing scheme.

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Hong, Seongjin [Department of physics, Chung-Ang University], Feldman, Matthew [ORNL] (ORCID:0000000240715284), Marvinney, Claire [ORNL], Lee, Donghwa [Korea Institute of Science and Technology (KIST)], Lee, Changhyoup [Korea Institute for Advanced Study (KIAS)] (ORCID:0000000214014230), Pooser, Raphael [Oak Ridge National Laboratory (ORNL)], Marino Valle, Alberto [ORNL] (ORCID:0000000153771122). 2025-08-01. Quantum-Enhanced Multi-Phase Distributed Sensing with a tSU(1,1) Interferometer. https://doi.org/10.1364/quantum.2025.qm2c.4

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