852 citations · 6.7k across the 84 of their papers we have counts for
57 papers · 1 filter
Nonorthogonal-state erasure as the resource behind apparent second-law violations
Xinshu Xia, Hui Hui Qin, Yu-Han Ma +2
Perfect deterministic distinguishing of nonorthogonal quantum states is forbidden by the linear and unitary structure of quantum mechanics. It has often been assumed that, if such…
Quantifying Algebraic Asymmetry of Hamiltonian Systems
Hui-Hui Qin, Shao-Ming Fei, Chang-Pu Sun
The symmetries play important roles in physical systems. We study the symmetries of a Hamiltonian system by investigating the asymmetry of the Hamiltonian with respect to certain a…
Universal trapping law induced by atomic cloud in single-photon cooperative dynamics
Lei Qiao, Chang-Pu Sun
Single-photon cooperative dynamics of an assembly of two-level quantum emitters coupled by a bosonic bath are investigated. The bosonic bath is general and it can be anything as lo…
Directional quantum random walk induced by coherence
Jin-Fu Chen, Yu-Han Ma, Chang-Pu Sun
Quantum walk (QW), which is considered as the quantum counterpart of the classical random walk (CRW), is actually the quantum extension of CRW from the single-coin interpretation.…
Boosting the performance of the Quantum Otto heat engines
Jin-Fu Chen, Chang-Pu Sun, Hui Dong
To optimize the performance of a heat engine in finite-time cycle, it is important to understand the finite-time effect of thermodynamic processes. Previously, we have shown that e…
Achieve Higher Efficiency at Maximum Power with Finite-time Quantum Otto Cycle
Jin-Fu Chen, Chang-Pu Sun, Hui Dong
The optimization of finite-time thermodynamic heat engines was intensively explored recently, yet limited to few cycles, e.g. finite-time Carnot-like cycle. In this paper, we suppl…
Uncertainties of genuinely incompatible triple measurements based on statistical distance
Hui-Hui Qin, Ting-Gui Zhang, Leonardo Jost +3
We investigate the measurement uncertainties of a triple of positive operator-valued measures (POVMs) based on statistical distance, and formulate state-independent tight uncertain…
The Bose-Fermi duality in quantum Otto heat engine with trapped repulsive Bosons
Jinfu Chen, Hui Dong, Chang-Pu Sun
Quantum heat engine with ideal gas has been well studied, yet the role of interaction was seldom explored. We construct a quantum Otto heat engine with N repulsive Bosonic particle…
Quantum sensing enhanced by adaptive periodic quantum control
Yi-Nan Fang, Xing Xiao, Chang-Pu Sun +2
Using a single quantum probe to sense other quantum objects offers distinct advantages but suffers from some limitations that may degrade the sensing precision severely, especially…
Optimal operating protocol to achieve efficiency at maximum power of heat engines
Yu-Han Ma, Dazhi Xu, Hui Dong +1
The efficiency at maximum power has been investigated extensively, yet the practical control scheme to achieve it remains elusive. We fill such gap with a stepwise Carnot-like cycl…
Photon echo using imperfect X-ray pulse with phase fluctuation
Jinfu Chen, Hui Dong, Chang-Pu Sun
We study the impact of inter-pulse phase fluctuation in free-electron X-ray laser on the signal in the photon echo spectroscopy, which is one of the simplest non-linear spectroscop…
Generalized Ultrastrong Optomechanics
Jie-Qiao Liao, Jin-Feng Huang, Lin Tian +2
We propose a reliable scheme to realize a generalized ultrastrong optomechanical coupling in a two-mode cross-Kerr-type coupled system, where one of the bosonic modes is strongly d…
Universal constraint for efficiency and power of a low-dissipation heat engine
Yu-Han Ma, Dazhi Xu, Hui Dong +1
The constraint relation for efficiency and power is crucial to design optimal heat engines operating within finite time. We find a universal constraint between efficiency and outpu…
Non-thermal radiation of black hole off canonical typicality
Yu-Han Ma, Qing-Yu Cai, Hui Dong +1
We study the Hawking radiation of black holes by considering the canonical typicality. For the universe consisting of black holes and their outer part, we directly obtain a non-the…
Decoherence of Macroscopic Objects from Relativistic Effect
G. H. Dong, Y. H. Ma, J. F. Chen +2
We study how the decoherence of macroscopic objects is induced intrisinically by relativistic effect. With the degree of freedom of center of mass (CM) characterizing the collectiv…
Spin in Compton scattering with pronounced polarization dynamics
Sven Ahrens, Chang-Pu Sun
We theoretically investigate a scattering configuration in Compton scattering, in which the orientation of the electron spin is reversed and simultaneously, the photon polarization…
Quantum thermodynamic cycle with quantum phase transition
Yu-Han Ma, Shan-He Su, Chang-Pu Sun
With the Lipkin-Meshkov-Glick (LMG) model as an illustration, we construct a thermodynamic cycle composed of two isothermal processes and two isomagnetic field processes and study…
The heat and work of quantum thermodynamic processes with quantum coherence
Shan-He Su, Jin-Fu Chen, Yu-Han Ma +2
Energy is often partitioned into heat and work by two independent paths corresponding to the change in the eigenenergies or the probability distributions of a quantum system. The d…
Maximal violation of Bell inequalities under local filtering
Ming Li, Huihui Qin, Jing Wang +2
We investigate the behavior of the maximal violations of the CHSH inequality and Vrtesi's inequality under the local filtering operations. An analytical method has been…
Quantum sensing of rotation velocity based on transverse field Ising model
Y. H. Ma, C. P. Sun
We study a transverse-field Ising model (TFIM) in a rotational reference frame. We find that the effective Hamiltonian of the TFIM of this system depends on the system's rotation v…
Spin-Orbit Coupling Induced Spin Squeezing in Three-Component Bose Gases
X. Y. Huang, F. X. Sun, W. Zhang +2
We observe spin squeezing in three-component Bose gases where all three hyperfine states are coupled by synthetic spin-orbit coupling. This phenomenon is a direct consequence of sp…
Hybrid Quantum-Classical Approach to Quantum Optimal Control
Jun Li, Xiaodong Yang, Xinhua Peng +1
A central challenge in quantum computing is to identify more computational problems for which utilization of quantum resources can offer significant speedup. Here, we propose a hyb…
An efficient and compact quantum switch for quantum circuits
Yulin Wu, Li-Ping Yang, Yarui Zheng +11
The engineering of quantum devices has reached the stage where we now have small scale quantum processors containing multiple interacting qubits within them. Simple quantum circuit…
Photoelectric converters with quantum coherence
Shan-He Su, Chang-Pu Sun, Sheng-Wen Li +1
Photon impingement is capable of liberating electrons in electronic devices and driving the electron flux from the lower chemical potential to higher chemical potential. Previous s…