https://doi.org/10.1140/epjd/s10053-022-00433-3
Regular Article - Quantum Optics
Highly sensitive temperature sensor in a parity-time-symmetric magnetomechanical system
1
School of Science, Hubei University of Technology, 430068, Wuhan, Hubei, China
2
Key Laboratory of Quantum Information, University of Science and Technology of China, 230026, Hefei, Anhui, China
3
College of Physics and Electronic Science, Hubei Normal University, 435002, Huangshi, Hubei, China
Received:
22
January
2022
Accepted:
6
June
2022
Published online:
22
June
2022
This paper proposes a temperature measurement scheme based on the homodyne spectrum of the output field in a parity-time symmetric cavity magnomechanical system. It is shown that the homodyne spectrum manifests a tri-peak structure in parity time symmetric phase and a double peak structure in the broken parity time symmetric phase. The height of the central peak of the homodyne spectrum in parity time symmetric phase is linearly dependent on the environmental temperature. Based on this linear relationship, the environmental temperature is indirectly inferred by measuring the central peak. This measurement scheme shows not only high measurement sensitivity, but also high measurement resolution and adjustability. Hence, this study is applicable for ultrahigh precision metrology and sensing.
The original online version of this article was revised: In the published article the corresponding author was listed with 3 affiliations, but only 2 affiliations are correct.
A correction to this article is available online at https://doi.org/10.1140/epjd/s10053-022-00456-w.
Copyright comment corrected publication 2022
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2022. corrected publication 2022
