A Michelson-type interferometer with two-mode squeezed coherent state input is considered. Such an interferometer has a better phase sensitivity over the shot-noise limit by a factor of , where r is the squeezing parameter [Phys. Rev. A 102, 022614 (2020)]. We show that when photon loss and noise in the two arms are asymmetric, an optimal choice of the squeezing angle can allow improvement in phase sensitivity without any increase in input or pump power. In particular, when loss occurs only in one arm of the interferometer, we can have improvement in phase sensitivity for photon loss up to 80%. Hence, a significant improvement can be made in several applications such as LiDAR, gyroscopes, and measuring refractive indices of highly absorptive/reflective materials.
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Optimizing the phase sensitivity of Michelson interferometer with two-mode squeezed coherent input in the presence of loss and noise
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September 2023
Research Article|
July 05 2023
Optimizing the phase sensitivity of Michelson interferometer with two-mode squeezed coherent input in the presence of loss and noise
Special Collection:
Jonathan P. Dowling Memorial Special Issue: The Second Quantum Revolution
Stav Haldar
;
Stav Haldar
a)
(Conceptualization, Formal analysis, Methodology, Software, Writing – original draft, Writing – review & editing)
1
Hearne Institute for Theoretical Physics, Department of Physics and Astronomy, Louisiana State University
, Baton Rouge, Louisiana 70803, USA
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Pratik J. Barge
;
Pratik J. Barge
b)
(Conceptualization, Formal analysis, Methodology, Software, Writing – review & editing)
1
Hearne Institute for Theoretical Physics, Department of Physics and Astronomy, Louisiana State University
, Baton Rouge, Louisiana 70803, USA
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Xiao-Qi Xiao
;
Xiao-Qi Xiao
(Conceptualization, Supervision, Writing – review & editing)
2
Department of Communication Engineering, Shanghai Dianji University
, Shanghai 200240, China
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Hwang Lee
Hwang Lee
c)
(Conceptualization, Funding acquisition, Investigation, Supervision, Writing – review & editing)
1
Hearne Institute for Theoretical Physics, Department of Physics and Astronomy, Louisiana State University
, Baton Rouge, Louisiana 70803, USA
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a)
Electronic mail: hstav1@lsu.edu
b)
Electronic mail: pbarge1@lsu.edu
c)
Electronic mail: hwlee@lsu.edu
Note: This paper is part of the Jonathan P. Dowling Memorial Special Issue.
AVS Quantum Sci. 5, 034401 (2023)
Article history
Received:
March 01 2023
Accepted:
June 12 2023
Citation
Stav Haldar, Pratik J. Barge, Xiao-Qi Xiao, Hwang Lee; Optimizing the phase sensitivity of Michelson interferometer with two-mode squeezed coherent input in the presence of loss and noise. AVS Quantum Sci. 1 September 2023; 5 (3): 034401. https://doi.org/10.1116/5.0148632
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