15 citations · 23 across the 16 of their papers we have counts for
16 papers
Multiparameter quantum estimation in a photon system induced by gravitational redshift
Wei Ye, Hui Cao, Songtao Zhang +6
As photons propagate through curved spacetime, gravitational effects become unavoidable. In particular, gravitational redshift can induce significant distortion in photon wave pack…
Simultaneous estimation of relative phase and coherence in astronomical interferometry
Yawen Tang, Wei Ye, Lu Qin +6
Astronomical interferometry is a cornerstone technique for high-resolution stellar imaging and observational astrophysics, extracting spatial information from the coherence of ligh…
Impact of the Unruh effect on the estimation precision of Gaussian channel parameters
Shoukang Chang, Yawen Tang, Wei Ye +3
Gaussian quantum channels constitute a pivotal physical framework for characterizing the dynamics of Gaussian quantum states. Extensive scholarly attention has been devoted to the…
Multiparameter quantum estimation with a uniformly accelerated Unruh-DeWitt detector
Shoukang Chang, Yashu Yang, Wei Ye +6
The uniformly accelerated Unruh-DeWitt detector serves as a fundamental model in relativistic quantum metrology. While previous studies have mainly concentrated on single-parameter…
Squeezing-Enhanced Two-Phase Estimation with N-Particle W-type States
Huan Zhang, Guofu Yin, Ying Xia +3
We investigate the simultaneous estimation of two optical phases in a three-mode interferometer assisted by optical parametric amplification (OPA). By employing the normally ordere…
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…
Multiparameter quantum estimation with Gaussian states: efficiently evaluating Holevo, RLD and SLD Cramér-Rao bounds
Shoukang Chang, Marco G. Genoni, Francesco Albarelli
Multiparameter quantum estimation theory is crucial for many applications involving infinite-dimensional Gaussian quantum systems, since they can describe many physical platforms,…
Squeezed Displaced Schrödinger-cat state as a signature of the PT-symmetry phase transition
Yuetao Chen, Shoukang Chang, Shaoyan Gao
Parity-time (PT ) symmetric systems are gain-loss systems whose dynamics are governed by non-Hermitian Hamiltonians with degeneracies at exceptional-points (EPs) and has been studi…
Noiseless linear amplification-based quantum Ziv-Zakai bound for phase estimation and its Heisenberg error limits in noisy scenarios
Wei Ye, Peng Xiao, Xiaofan Xu +8
In this work, we address the central problem about how to effectively find the available precision limit of unknown parameters. In the framework of the quantum Ziv-Zakai bound (QZZ…
Evaluating the quantum optimal biased bound in a unitary evolution process
Shoukang Chang, Wei Ye, Xuan Rao +6
Seeking the available precision limit of unknown parameters is a significant task in quantum parameter estimation. One often resorts to the widely utilized quantum Cramer-Rao bound…
Global quantum thermometry based on the optimal biased bound
Shoukang Chang, Wei Ye, Xuan Rao +6
Thermometry is a fundamental parameter estimation problem which is crucial in the development process of natural sciences. One way to solve this problem is to the extensive used lo…
Simultaneous multiple angular displacement estimation precision enhanced by the intramode correlation
Shoukang Chang, Wei Ye, Xuan Rao +5
The angular displacement estimation is one of significant branches of quantum parameter estimation. However, most of the studies have focused on the single-angular displacement est…
Quantum multiparameter estimation with multi-mode photon catalysis entangled squeezed state
Huan Zhang, Wei Ye, Shoukang Chang +3
We propose a method to generate the multi-mode entangled catalysis squeezed vacuum states (MECSVS) by embedding the cross-Kerr nonlinear medium into the Mach-Zehnder interferometer…
Quantum-improved phase estimation with a displacement-assisted SU(1,1) interferometer
W. Ye, S. K. Chang, S. Y. Gao +3
By performing two local displacement operations (LDOs) inside an SU(1,1) interferometer, called as the displacement-assisted SU(1,1) [DSU(1,1)], both the phase sensitivity based on…
Evaluating the quantum Ziv-Zakai bound in noisy environments
Shoukang Chang, Wei Ye, Xuan Rao +5
In the highly non-Gaussian regime, the quantum Ziv-Zakai bound (QZZB) provides a lower bound on the available precision, demonstrating the better performance compared with the quan…
Improvement of phase sensitivity in SU(1,1) interferometer via a Kerr nonlinear
Shoukang Chang, Wei Ye, Huan Zhang +3
We propose a theoretical scheme to enhance the phase sensitivity by introducing a Kerr nonlinear phase shift into the traditional SU(1,1) interferometer with a coherent state input…