Sensing performance enhancement via asymmetric gain optimization in the
atom-light hybrid interferometer
- URL: http://arxiv.org/abs/2201.03818v1
- Date: Tue, 11 Jan 2022 07:55:46 GMT
- Title: Sensing performance enhancement via asymmetric gain optimization in the
atom-light hybrid interferometer
- Authors: Zhifei Yu, Bo Fang, Shuying Chen, Pan Liu, Guzhi Bao, Chun-hua Yuan,
and L.Q Chen
- Abstract summary: We experimentally demonstrate the mitigating effect of the loss on visibility of the SALHI via asymmetric gain optimization.
We theoretically find that the optimal condition for the largest visibility is the same as that for the enhancement of signal-to-noise ratio (SNR) to the best value in the presence of losses.
Our results provide a significant foundation for practical application of the SALHI in radar and ranging measurements.
- Score: 3.7832285877860325
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The SU (1,1)-type atom-light hybrid interferometer (SALHI) is a kind of
interferometer that is sensitive to both the optical phase and atomic phase.
However, the loss has been an unavoidable problem in practical applications and
greatly limits the use of interferometers. Visibility is an important parameter
to evaluate the sensing performance of interferometers. Here, we experimentally
demonstrate the mitigating effect of the loss on visibility of the SALHI via
asymmetric gain optimization, where the maximum threshold of loss to visibility
close to $100\%$ is increased. Furthermore, we theoretically find that the
optimal condition for the largest visibility is the same as that for the
enhancement of signal-to-noise ratio (SNR) to the best value in the presence of
losses using the intensity detection, indicating that the visibility can act as
an experimental operational criterion for SNR improvement in practical
applications. Improvement of the interference visibility means achievement of
SNR enhancement. Our results provide a significant foundation for practical
application of the SALHI in radar and ranging measurements.
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