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Improved phase sensitivity of an SU(1,1) interferometer based on the internal single-path local squeezing operation
Qingqian Kang, Zekun Zhao, Teng Zhao +2
Compared to passive interferometers, SU(1,1) interferometers exhibit superior phase sensitivity due to the incorporation of nonlinear elements that enhance their ability to detect…
Phase sensitivity for an SU(1,1) interferometer via multiphoton subtraction at the output port
Tao Jiang, Zekun Zhao, Qingqian Kang +4
In the field of quantum precision measurement, enhancing phase sensitivity is crucial for various applications, including quantum metrology and quantum sensing technologies. We the…
Phase estimation via number-conserving operation inside the SU(1,1) interferometer
Qingqian Kang, Zekun Zhao, Teng Zhao +2
Utilizing nonlinear elements, SU(1,1) interferometers demonstrate superior phase sensitivity compared to passive interferometers. However, the precision is significantly impacted b…
Phase estimation via coherent and photon-catalyzed squeezed vacuum states
Zekun Zhao, Qingqian Kang, Huan Zhang +3
The research focused on enhancing the measurement accuracy through the use of non-Gaussian states has garnered increasing attention. In this study, we propose a scheme to input the…