25 citations · 61 across the 17 of their papers we have counts for
17 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…
Inverse-squeezing receivers for squeezed-state pulse-position modulation under ideal and phase-diffusion conditions
Enhao Bai, Fengkai Sun, Tianyi Wu +4
We introduce a squeezed-state pulse-position modulation (S-PPM) format, where the empty slots are squeezed vacuum states and the pulse slot is a displaced squeezed state. Based on…
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…
Residual-Squeezing Mechanism of Mismatch in Inverse-Squeezing Kennedy Receivers
Enhao Bai, Fengkai Sun, Tianyi Wu +8
The discrimination of quantum states is fundamental to quantum information processing. Inverse-squeezing Kennedy (IS-Kennedy) receivers can outperform the coherent-state BPSK Helst…
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…
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…
Quantum super-resolution for imaging two pointlike entangled photon sources
Huan Zhang, Wei Ye, Ying Xia +2
We investigate the resolution for imaging two pointlike entangled sources by using the method of the moments and the spatial-mode demultiplexing (SPADE), where the pointlike entang…
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…
Phase estimation of Mach-Zehnder interferometer via Laguerre excitation squeezed state
Zekun Zhao, Huan Zhang, Yibing Huang +1
Quantum metrology has an important role in the fields of quantum optics and quantum information processing. Here we introduce a kind of non-Gaussian state, Laguerre excitation sque…
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…
Demonstration of entanglement and coherence in GHZ-like state when exposed to classical environments with power-law noise
Atta Ur Rahman, ZhaoXu Ji, HuanGuo Zhang
Entanglement and coherence protection are investigated using the dynamical map of three non-interacting qubits that are initially prepared as maximally entangled GHZ-like states co…
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…
Improving phase estimation using the number-conserving operations
Huan Zhang, Wei Ye, Chaoping Wei +3
We propose a theoretical scheme to improve the resolution and precision of phase measurement with parity detection in the Mach-Zehnder interferometer by using a nonclassical input…
Enhancing discrete-modulated continuous-variable measurement-device-independent quantum key distribution via quantum catalysis
Wei Ye, Ying Guo, Yun Mao +2
The discrete modulation can make up for the shortage of transmission distance in measurement-device-independent continuous-variable quantum key distribution (MDI-CVQKD) that has an…