14 citations · 116 across the 28 of their papers we have counts for
28 papers
Nonreciprocal Dispersive Coupling for Quantum Sensing
Dong Xie, Chunling Xu
Dispersive coupling is widely utilized for quantum information readout. Most prior studies have concentrated on reciprocal dispersive coupling. Here, we further construct nonrecipr…
Super-Heisenberg Scaling Using Nonlinear Quantum Scrambling
Dong Xie, Chunling Xu
Super-Heisenberg scaling, which scales as with in terms of the number of particles or in terms of the evolution time , is better than Heisenberg scal…
Gravimetry enhanced by nonreciprocal optomechanical coupling
Dong Xie, Chunling Xu
We explore how to measure the gravitational acceleration by using a dissipative optomechanical cavity. What is quite different from the conventional measurement methods is that we…
Dispersive Qubit Readout of Temperature
Dong Xie, Chunling Xu
Squeezed light can exponentially increase the signal-to-noise ratio (SNR) of dispersive qubit readout, especially using a combination of injected external squeezing (IES) and intra…
Nonreciprocal Quantum Sensing
Dong Xie, Chunling Xu
Nonreciprocity can not only generate quantum resources, but also shield noise and reverse interference from driving signals. We investigate the advantages of nonreciprocal coupling…
Quantum metrology in a driven-dissipation down-conversion system beyond the parametric approximation
Dong Xie, Chunling Xu
We investigate quantum metrology in a degenerate down-conversion system composed of a pump mode and two degenerate signal modes. In the conventional parametric approximation, the p…
Thermometry with a Dissipative Heavy Impurity
Dong Xie, Chunling Xu
Improving the measurement precision of low temperature is significant in fundamental science and advanced quantum technology application. However, the measurement precision of temp…
Quantum estimation of tripartite coupling in Spin-Magnon-Mechanical Hybrid Systems
Dong Xie, Chunling Xu
Tripartite interactions play a fundamental role in the quantum information processing and quantum technology. However, it is generally difficult to realize strong tripartite coupli…
Exceptional point in self-consistent Markovian master equations
Dong Xie, Chunling Xu
Exceptional point (EP) denotes the non-Hermitian degeneracy, in which both eigenvalues and eigenstates become identical. By the conventional local Markovian master equation, EP can…
Quantum metrology with quantum Wheatstone bridge composed of Bose systems
Dong Xie, Chunling Xu, Xiwei Yao +1
The quantum version of a special classical Wheatstone bridge built with a boundary-driven spin system has recently been proposed. We propose a quantum Wheatstone bridge consisting…
Optimal temperature estimation in polariton Bose-Einstein Condensate
Dong Xie
Improving the measurement precision of temperature is very important and challenging, especially in the low temperature range. Based on the existence of invariant subspaces during…
Quantum estimation of Kerr nonlinearity in driven-dissipative systems
Dong Xie, Chunling Xu, An Min Wang
We mainly investigate the quantum measurement of Kerr nonlinearity in the driven-dissipative system. Without the dissipation, the measurement precision of the nonlinearity paramete…
Quantum thermometry in diffraction-limited systems
Dong Xie, Chunling Xu, An Min Wang
We investigate the ultimate quantum limit of resolving the temperatures of two thermal sources affected by the diffraction. More quantum Fisher information can be obtained with the…
Quantum phases transition revealed by the exceptional point in Hopfield-Bogoliubov matrix
Dong Xie, Chunling Xu, An Min Wang
We use the exceptional point in Hopfield-Bogoliubov matrix to find the phase transition points in the bosonic system. In many previous jobs, the excitation energy vanished at the c…
Quantum Thermometry with a Dissipative Quantum Rabi System
Dong Xie, Chunling Xu, An Min Wang
Dissipative quantum Rabi System, a finite-component system composed of a single two-level atom interacting with an optical cavity field mode, exhibits a quantum phase transition, w…
Quantum Metrology with Coherent Superposition of Two Different Coded Channels
Dong Xie, Chunling Xu, An Min Wang
We investigate the advantage of coherent superposition of two different coded channels in quantum metrology. In a continuous variable system, we show that the Heisenberg limit $1/N…
Parameter estimation and quantum entanglement in PT symmetrical cavity magnonics system
Dong Xie, Chunling Xu, An min Wang
We investigate the parameter estimation in a magnon-cavity-magnon coupled system. PT symmetrical two magnons system can be formed in the gain magnetic materials by the adiabatic el…
Enhancing parameter estimation precision in dissipative environment with two-photon driving
Dong Xie, Chunling Xu
We investigate the frequency estimation of an optical field suffering from an unavoidable dissipative environment. Generally, dissipative noises greatly reduce the precision. Here,…
Optimal control for multi-parameter quantum estimation with time-dependent Hamiltonians
Dong Xie, Chunling Xu
We investigate simultaneous estimation of multi-parameter quantum estimation with time-dependent Hamiltonians. We analytically obtain the maximal quantum Fisher information matrix…
Multi-parameter Quantum Magnetometry with Spin States in coarsened measurement reference
Dong Xie, Chunling Xu
We investigate the simultaneous estimation of the intensity and the orientation of a magnetic field by the multi-parameter quantum Fisher information matrix. A general expression i…
Enhancing precision of damping rate by PT symmetric Hamiltonian
Dong Xie, Chunling Xu
We utilize quantum Fisher information to investigate the damping parameter precision of a dissipative qubit. PT symmetric non-Hermitian Hamiltonian is used to enhance the parameter…
Quantum estimation of detection efficiency with no-knowledge quantum feedback
Dong Xie, Chunling Xu, Jianyong Chen +1
We investigate that no-knowledge measurement-based feedback control is utilized to obtain the estimation precision of the detection efficiency. For the feedback operators that conc…
High-dimensional cryptographic quantum parameter estimation
Dong Xie, Chunling Xu, Jianyong Chen +1
We investigate cryptographic quantum parameter estimation with a high-dimensional system that allows only Bob (Receiver) to access the result and achieve optimal parameter precisio…
Michelson interferometer for measuring temperature
Dong Xie, Chunling Xu, Anmin wang
We investigate that temperature can be measured by a modified Michelson interferometer, where at least one reflected mirror is replaced by a thermalized sample. Both of two mirrors…