215 citations · 1.5k across the 67 of their papers we have counts for
65 papers · 1 filter
Asymmetrical interaction induced real spectra and exceptional points in a non-Hermitian Hamiltonian
Wenlin Li, Chong Li, Heshan Song
Non-Hermitian systems with parity-time symmetry have been developed rapidly and hold great promise for future applications. Unlike most existing works considering the symmetry of t…
Realization and application of parity-time-symmetric oscillators in quantum regime
Wenlin Li, Chong Li, Heshan Song
Although people have already artificially formed parity--time () symmetry with gain and loss in a balanced manner, it is still a defect that the gain is restricted to…
Flexible and experimentally feasible shortcut to quantum Zeno dynamic passage
Wenlin Li, Chong Li, Heshan Song
We propose and discuss a theoretical scheme to speed up Zeno dynamic passage by an external acceleration Hamiltonian. This scheme is a flexible and experimentally feasible accelera…
Quantum synchronization and quantum state sharing in irregular complex network
Wenlin Li, Chong Li, Heshan Song
We investigate quantum synchronization phenomenon within the complex network constituted by coupled optomechanical systems and prove the unknown identical quantum states can be sha…
The initial-state dependence of quantum speed limit
Shao-xiong Wu, Yang Zhang, Chang-shui Yu +1
The generic bound of quantum speed limit time (the minimal evolution time) for a qubit system interacting with structural environment is investigated. We define a new bound for the…
Effects of the reservoir squeezing on the precision of parameter estimation
Shao-xiong Wu, Chang-shui Yu, He-shan Song
The effects of reservoir squeezing on the precision of parameter estimation are investigated analytically based on non-perturbation procedures. The exact analytic quantum Fisher in…
Criterion of quantum synchronization and controllable quantum synchronization based on an optomechanical system
Wenlin Li, Chong Li, Heshan Song
We propose a quantitative criterion to determine whether the coupled quantum systems can achieve complete synchronization or phase synchronization in the process of analyzing quant…
Lyapunov-based quantum synchronization in designed optomechanical systems
Wenlin Li, Chong Li, Heshan Song
We extend the concepts of quantum complete synchronization and phase synchronization, which are proposed firstly in [Phys. Rev. Lett, 111 103605 (2013)], to more widespread quantum…
Weak measurement amplification in optomechanics via a squeezed coherent state pointer
Gang Li, Li-Bo Chen, Xiu-Min Lin +1
We present a scheme for achieving amplification of the displacement of the mirror in optomechanical cavity using single-photon postselection where the mirror is initially prepared…
Weak measurement combined with quantum delayed-choice experiment and implementation in optomechanical system
Gang Li, Tao Wang, Ming-Yong Ye +1
Weak measurement [1,19] combined with quantum delayed-choice experiment that use quantum beam splitter instead of the beam splitter give rise to a surprising amplification effect,…
Amplification effects in optomechanics via weak measurement
Gang Li, Tao Wang, He-Shan Song
We revisit the scheme of single-photon weak-coupling optomechanics using post-selection, proposed by Pepper, Ghobadi, Jeffrey, Simon and Bouwmeester [Phys. Rev. Lett. 109, 023601 (…
Weak measurement with a coherent state pointer and its implementation in optomechanical system
Gang Li, Ming-Yong Ye, Xiu-Min Lin +1
Weak measurement with a coherent state pointer and in combination with an orthogonal postselection can lead to a surprising amplification effect, and we give a fire-new physical me…
Precision metrology of weak measurement with thermal state pointer
Gang Li, Li-Bo Chen, Tao Wang +2
Quantum metrology is being gradually studied for weak measurement systems. For weak measurement systems with thermal state pointer, we find that in the displacement space correspon…
Weak measurement amplification based on thermal noise effect
Gang Li, Tao Wang, He-Shan Song
Most studies for postselected weak measurement focus on using pure Gaussian state as a pointer, which can only give an amplification limit reaching the level of the ground state fl…
Scalable quantum information transfer between nitrogen-vacancy-center ensembles
Feng-Yang Zhang, Chui-Ping Yang, He-Shan Song
We propose an architecture for realizing quantum information transfer (QIT). In this architecture, a LC circuit is used to induce the necessary interaction between flux qubits, eac…
Uncertainty-induced quantum nonlocality
Shao-xiong Wu, Jun Zhang, Chang-shui Yu +1
Based on the skew information, we present a quantity, uncertainty-induced quantum nonlocality (UIN) to measure the quantum correlation. It can be considered as the updated version…
Quantum correlation measure in arbitrary bipartite systems
Chang-shui Yu, Shao-xiong Wu, Xiao-guang Wang +2
A definition of quantum correlation is presented for an arbitrary bipartite quantum state based on the skew information. This definition not only inherits the good properties of sk…
Bipartite concurrence and localized coherence
Chang-shui Yu, He-shan Song
Based on a proposed coherence measure, we show that the local coherence of a bipartite quantum pure state (coherence of its reduced density matrix) is exactly the same as the minim…
Entangling Power in the Deterministic Quantum Computation with One Qubit
Chang-shui Yu, X. X. Yi, He-shan Song +1
The deterministic quantum computing with one qubit (DQC1) is a mixed-state quantum computation algorithm that evaluates the normalized trace of a unitary matrix and is more powerfu…
The Dual Roles of Quantum Discord in a Non-demolition Probing Task
Chang-shui Yu, Jia-sen Jin, Heng Fan +1
We present a non-demolition quantum information processing task of probing the information of a class of quantum state. In this task, the information is extracted by some unitary e…
Driving three atoms into a singlet state in an optical cavity via adiabatic passage of a dark state
Mei Lu, Yan Xia, Jie Song +1
In this paper, we propose an efficient scheme to drive three atoms in an optical cavity into a singlet state via adiabatic passage. Appropriate Rabi frequencies of the classical fi…
One-step implementation of the Fredkin gate via quantum Zeno dynamics
Zhi-Cheng Shi, Yan Xia, Jie Song
We study one-step implementation of the Fredkin gate in a bi-modal cavity under both resonant and large detuning conditions based on quantum Zeno dynamics, which reduces the comple…
Quantum discord induced by white noises
Jia-sen Jin, Chang-shui Yu, Pei Pei +1
We discuss the creation of quantum discord between two two-level atoms trapped in an optical cavity in a noisy environment. It is shown that nonzero steady-state quantum discord be…
Nondestructive identification of the Bell diagonal state
Jia-sen Jin, Chang-shui Yu, He-shan Song
We propose a scheme for identifying an unknown Bell diagonal state. In our scheme the measurements are performed on the probe qubits instead of the Bell diagonal state. The disting…