1 citations · 1 across the 12 of their papers we have counts for
14 papers
Heralded Non-Gaussian Squeezed-State Inputs for Parity-Detection SU(1,1) Interferometry
Lifen Guo, Qingqian Kang, Teng Zhao +3
Non-Gaussian operations can reshape the photon statistics of continuous-variable probes, but their metrological advantage is meaningful only when heralding probability and photon-n…
Enhancing Phase Estimation in a Hybrid Interferometer via Kerr Nonlinearity and Photon Subtraction
Lifen Guo, Qingqian Kang, Zekun Zhao +5
We propose a high-precision phase estimation scheme in a hybrid interferometer by synergistically combining a Kerr nonlinear phase shifter and multi-photon subtraction operations.…
Enhanced Phase Estimation via Photon-Added Two-Mode Squeezed States and Kerr Nonlinearity
Zekun Zhao, Qingqian Kang, Teng Zhao +3
Quantum metrology employs quantum resources to achieve measurement precision beyond classical limits. This work investigates a Mach--Zehnder interferometer incorporating a Kerr non…
Quantum Steering and Entanglement in a Tritter: Hierarchy under Loss
Jifeng Sun, Shumin Yang, Teng Zhao +2
We present a comprehensive phase diagram of quantum correlations in a three-mode Gaussian state generated by a tritter, driven by a two-mode squeezed vacuum and a coherent state. T…
Phase estimation via photon subtraction at the output of the hybrid interferometer
Qisi Zhou, Tao Jiang, Qingqian Kang +4
The hybrid interferometer integrating an optical parametric amplifier and a beam splitter has the potential to outperform the SU(1,1) interferometer. However, photon loss remains a…
Phase sensitivity of lossy Mach-Zehnder interferometer via photon addition operation
Qisi Zhou, Qingqian Kang, Teng Zhao +3
Photon addition operations applied to squeezed states have been shown to significantly enhance phase sensitivity. In this study, we extend this approach by applying photon addition…
Phase estimation via delocalized photon subtraction operation inside the SU(1,1) interferometer
Zhihao Li, Qingqian Kang, Teng Zhao +3
We propose a theoretical scheme to improve the precision of phase measurement using intensity detection by implementing delocalized photon subtraction operation (D-PSO) inside the…
Two-parameter estimation via photon subtraction operation within a feedback-assisted interferometer
Qingqian Kang, Zekun Zhao, Qisi Zhou +5
In this paper, we analyze how multi-photon subtraction operations in a feedback-assisted interferometer can enhance measurement precision for single-parameter and two-parameter est…
Improved linear and Kerr nonlinear phase estimation via photon addition operations
Zekun Zhao, Qingqian Kang, Shoukang Chang +4
The accuracy of quantum measurements can be effectively improved by using both photon-added non-Gaussian operations and Kerr nonlinear phase shifters. Here, we employ coherent stat…
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…
Phase estimation via multi-photon subtraction inside the SU(1,1) interferometer
Q. Q. Kang, Z. K. Zhao, Y. K. Xu +3
To improve the phase sensitivity, multi-photon subtraction schemes within the SU(1,1) interferometer are proposed. The input states are the coherent state and the vacuum state, and…