Quantum entangled Sagnac interferometer

Wen Zhao; Xuan Tang; Xueshi Guo; Xiaoying Li; Z. Y. Ou

doi:10.1063/5.0135084

Quantum entangled Sagnac interferometer

Wen Zhao, Xuan Tang, Xueshi Guo, Xiaoying Li^*, Z. Y. Ou^*

^*Corresponding author for this work

Department of Physics

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Abstract

A SU(1,1) interferometer (SUI) is a kind of quantum entangled interferometer that uses directly entangled quantum fields for sensing phase change. For rotational sensing, Sagnac geometry is usually adopted. However, because SUI depends on the phase sum of the two arms, traditional Sagnac geometry, when applied to SUI, will result in null signal. In this paper, we modify the traditional Sagnac interferometer by nesting SUIs inside. We show that the rotational signal comes from two parts labeled as "classical" and "quantum," respectively, and the quantum part, where quantum entangled fields are used for sensing, has the rotational signal enhanced by a factor related to the gain of the SUI. © 2023 Author(s).

Original language	English
Article number	064003
Journal	Applied Physics Letters
Volume	122
Issue number	6
Online published	7 Feb 2023
DOIs	https://doi.org/10.1063/5.0135084
Publication status	Published - Feb 2023

Funding

This work was supported in part by the National Natural Science Foundation of China (Grant Nos. 91836302, 12004279, and 12074283) and by the General Research Fund from Hong Kong Research Grants Council (No. 11315822)

Publisher's Copyright Statement

COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Wen Zhao, Xuan Tang, Xueshi Guo, Xiaoying Li, and Z. Y. Ou , "Quantum entangled Sagnac interferometer", Appl. Phys. Lett. 122, 064003 (2023), and may be found at https://doi.org/10.1063/5.0135084.

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title = "Quantum entangled Sagnac interferometer",

abstract = "A SU(1,1) interferometer (SUI) is a kind of quantum entangled interferometer that uses directly entangled quantum fields for sensing phase change. For rotational sensing, Sagnac geometry is usually adopted. However, because SUI depends on the phase sum of the two arms, traditional Sagnac geometry, when applied to SUI, will result in null signal. In this paper, we modify the traditional Sagnac interferometer by nesting SUIs inside. We show that the rotational signal comes from two parts labeled as {"}classical{"} and {"}quantum,{"} respectively, and the quantum part, where quantum entangled fields are used for sensing, has the rotational signal enhanced by a factor related to the gain of the SUI. {\textcopyright} 2023 Author(s).",

author = "Wen Zhao and Xuan Tang and Xueshi Guo and Xiaoying Li and Ou, {Z. Y.}",

year = "2023",

month = feb,

doi = "10.1063/5.0135084",

language = "English",

volume = "122",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

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AU - Zhao, Wen

AU - Tang, Xuan

AU - Guo, Xueshi

AU - Li, Xiaoying

AU - Ou, Z. Y.

PY - 2023/2

Y1 - 2023/2

N2 - A SU(1,1) interferometer (SUI) is a kind of quantum entangled interferometer that uses directly entangled quantum fields for sensing phase change. For rotational sensing, Sagnac geometry is usually adopted. However, because SUI depends on the phase sum of the two arms, traditional Sagnac geometry, when applied to SUI, will result in null signal. In this paper, we modify the traditional Sagnac interferometer by nesting SUIs inside. We show that the rotational signal comes from two parts labeled as "classical" and "quantum," respectively, and the quantum part, where quantum entangled fields are used for sensing, has the rotational signal enhanced by a factor related to the gain of the SUI. © 2023 Author(s).

AB - A SU(1,1) interferometer (SUI) is a kind of quantum entangled interferometer that uses directly entangled quantum fields for sensing phase change. For rotational sensing, Sagnac geometry is usually adopted. However, because SUI depends on the phase sum of the two arms, traditional Sagnac geometry, when applied to SUI, will result in null signal. In this paper, we modify the traditional Sagnac interferometer by nesting SUIs inside. We show that the rotational signal comes from two parts labeled as "classical" and "quantum," respectively, and the quantum part, where quantum entangled fields are used for sensing, has the rotational signal enhanced by a factor related to the gain of the SUI. © 2023 Author(s).

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U2 - 10.1063/5.0135084

DO - 10.1063/5.0135084

M3 - RGC 21 - Publication in refereed journal

SN - 0003-6951

VL - 122

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 6

M1 - 064003

ER -

Quantum entangled Sagnac interferometer

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GRF: Quantum Sensing with Atom-Light Hybrid Interferometers

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Quantum entangled Sagnac interferometer

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