Publications (62)
Demonstrating Additional Law of Relativistic Velocities based on Squeezed Light
Da-Bao Yang, Yan Li, Fu-Lin Zhang +1
Special relativity is foundation of many branches of modern physics, of which theoretical results are far beyond our daily experience and hard to realized in kinematic experiments.…
Thermodynamically consistent master equation based on subsystem eigenstates
Si-Ying Wang, Qinghong Yang, Fu-Lin Zhang
Master equations under appropriate assumptions are efficient tools for the study of open quantum systems. For many-body systems, subsystems of which locally couple to thermal baths…
Beating the Clauser-Horne-Shimony-Holt and the Svetlichny games with Optimal States
Hong-Yi Su, Changliang Ren, Jing-Ling Chen +6
We study the relation between the maximal violation of Svetlichny's inequality and the mixedness of quantum states and obtain the optimal state (i.e., maximally nonlocal mixed stat…
Intrinsic coherence in assisted sub-state discrimination
Fu-Lin Zhang, Teng Wang
We study intrinsic coherence in the tripartite process to unambiguously discriminate two nonorthogonal states of a qubit, entangled with another one, and assisted by an auxiliary s…
Nonequilibrium quantum absorption refrigerator
Jian-Ying Du, Fu-Lin Zhang
We study a quantum absorption refrigerator, in which a target qubit is cooled by two machine qubits in a nonequilibrium steady state. It is realized by a strong internal coupling i…
Dynamical symmetries of two-dimensional systems in relativistic quantum mechanics
Fu-Lin Zhang, Ci Song, Jing-Ling Chen
The two-dimensional Dirac Hamiltonian with equal scalar and vector potentials has been proved commuting with the deformed orbital angular momentum . When the potential takes the…
A new quasi-exactly solvable problem and its connection with an anharmonic oscillator
Da-Bao Yang, Fu-Lin Zhang, Jing-Ling Chen
The two-dimensional hydrogen with a linear potential in a magnetic field is solved by two different methods. Furthermore the connection between the model and an anharmonic oscillat…
Non-standard Schwinger fermionic representation of unitary group
Fu-Lin Zhang, Jing-Ling Chen
The non-standard Schwinger fermionic representation of the unitary group is studied by using -fermion operators. One finds that the Schwinger fermionic representation of the U(n…
Quantum Entanglement transfer between spin-pairs
Qing-You Meng, Fu-Lin Zhang, Jing-Ling Chen
We investigate the transfer of entanglement from source particles (SP) to target particles (TP) in the Heisenberg interaction . In our research, TP…
Most robust and fragile two-qubit entangled states under depolarizing channels
Chao-Qian Pang, Fu-Lin Zhang, Yue Jiang +2
For a two-qubit system under local depolarizing channels, the most robust and most fragile states are derived for a given concurrence or negativity. For the one-sided channel, the…
Connection between Coulomb and harmonic oscillator potentials in relativistic quantum mechanics
Bo Fu, Fu-Lin Zhang, Jing-Ling Chen
The Levi-Civita transformation is applied in the two-dimensional (2D) Dirac and Klein-Gordon (KG) equations with equal external scalar and vector potentials. The Coulomb and harmon…
Discriminating bipartite mixed states by local operations
Jin-Hua Zhang, Fu-Lin Zhang, Zhi-Xi Wang +2
Unambiguous state discrimination of two mixed bipartite states via local operations and classical communications (LOCC) is studied and compared with the result of a scheme realized…
Linear response of tripartite entanglement to infinitesimal noise
Fu-Lin Zhang, Jing-Ling Chen
Recent experimental progress in prolonging the coherence time of a quantum system prompts us to explore the behavior of quantum entanglement at the beginning of the decoherence pro…
Local correlations of mixed two-qubit states
Fu-Lin Zhang, Jing-Ling Chen, Chang-Liang Ren +1
The quantum probability distribution arising from single-copy von Neumann measurements on an arbitrary two-qubit state is decomposed into the local and nonlocal parts, in the appro…
Local-hidden-state models for Bell diagonal states and beyond
Fu-Lin Zhang, Yuan-Yuan Zhang
For a bipartite entangled state shared by two observers, Alice and Bob, Alice can affect the post-measured states left to Bob by choosing different measurements on her half. Alice…
Irreducible MultiQutrit Correlations in Greenberger-Horne-Zeilinger Type States
Fu-Lin Zhang, Jing-Ling Chen
Following the idea of the continuity approach in [D. L. Zhou, Phys. Rev. Lett. 101, 180505 (2008)], we obtain the degrees of irreducible multi-party correlations in two families of…
Dynamical symmetries of the Klein-Gordon equation
Fu-Lin Zhang, Jing-Ling Chen
The dynamical symmetries of the two-dimensional Klein-Gordon equations with equal scalar and vector potentials (ESVP) are studied. The dynamical symmetries are considered in the pl…
Robust violation of a multipartite Bell inequality from the perspective of a single-system game
Gang-Gang He, Xing-Yan Fan, Fu-Lin Zhang
Recently, Fan \textit{et al.} [Mod. Phys. Lett. A 36, 2150223 (2021)], presented a generalized Clauser-Horne-Shimony-Holt (CHSH) inequality, to identify -qubit Greenberger-Horne…
Sequential state discrimination with quantum correlation
Jin-Hua Zhang, Fu-Lin Zhang, Mai-Lin Liang
The sequential unambiguous state discrimination (SSD) of two states prepared in arbitrary prior probabilities is studied, and compared with three strategies that allow classical co…
Phase-Entanglement Complementarity with Time-Energy Uncertainty
Fu-Lin Zhang, Mai-Lin Liang
We present a unified view of the Berry phase of a quantum system and its entanglement with surroundings. The former reflects the nonseparability between a system and a classical en…
Virial Theorem and Hypervirial Theorem in a spherical geometry
Yan Li, Fu-Lin Zhang, Jing-Ling Chen
The Virial Theorem in the one- and two-dimensional spherical geometry are presented, in both classical and quantum mechanics. Choosing a special class of Hypervirial operators, the…
Quantum Statistics Forbids Particle Exchange Statistics beyond Bosons and Fermions in 3D
Chi-Chun Zhou, Shuai A. Chen, Yu-Zhu Chen +3
Quantum matter in three spatial dimensions is observed to consist exclusively of bosons and fermions. Whether this empirical fact follows from basic consistency requirements of qua…
Maxwell demon with anti-decoherence
Zi-Yan Zhang, Jian-Ying Du, Fu-Lin Zhang
Subsystems of a composite system in a pure state generally exist in mixed states and undergo changes with the overall state. This phenomenon arises from the coherence of the entire…
Quantum cloning of steering
Dian Zhu, Wei-Min Shang, Fu-Lin Zhang +1
Quantum steering in a global state allows an observer to remotely steer a subsystem into different ensembles by performing different local measurements on the other part. We show t…
Geometric phase for nonlinear coherent and squeezed state
Da-Bao Yang, Ying Chen, Fu-Lin Zhang +1
The geometric phases for standard coherent states which are widely used in quantum optics have attracted a large amount of attention. Nevertheless, few physicists consider about th…
Fidelity induced distance measures for quantum states
Zhihao Ma, Fu-Lin Zhang, Jing-Ling Chen
Fidelity plays an important role in quantum information theory. In this letter, we introduce new metric of quantum states induced by fidelity, and connect it with the well-known tr…
Alternative Decomposition of Two-Qutrit Pure States and Its Relation with Entanglement Invariants
Rui-Juan Gu, Fu-Lin Zhang, Shao-Ming Fei +1
Based on maximally entangled states in the full- and sub-spaces of two qutrits, we present an alternative decomposition of two-qutrit pure states in a form $|Ψ>=\frac{p_{1}}{\sqrt…
Hear from Quantum Galperin Billiards
Yin Cai, Fu-Lin Zhang
Galperin introduced an interesting method to learn the digits of by counting the collisions of two billiard balls and a hard wall. This paper studies two quantum versions of t…
Higgs algebraic symmetry in the two-dimensional Dirac equation
Fu-Lin Zhang, Bo Fu, Jing-Ling Chen
The dynamical symmetry algebra of the two-dimensional Dirac Hamiltonian with equal scalar and vector Smorodinsky-Winternitz potentials is constructed. It is the Higgs algebra, a cu…
Super fidelity and related metric
Zhi-Hao Ma, Fu-Lin Zhang, Zhi-Hua Chen +1
We report a new metric of quantum states. This metric is build up from super-fidelity, which has deep connection with the Uhlmann-Jozsa fidelity and plays an important role in quan…
Reduction of thermodynamic uncertainty by a virtual qubit
Yang Li, Fu-Lin Zhang
The thermodynamic uncertainty relation (TUR) imposes a fundamental constraint between current fluctuations and entropy production, providing a refined formulation of the second law…
Assisted optimal state discrimination without entanglement
Li-Fang Xu, Fu-Lin Zhang, Mai-Lin Liang +1
A fundamental problem in quantum information is to explore the roles of different quantum correlations in a quantum information procedure. Recent work [Phys. Rev. Lett., 107 (2011)…
Unambiguous state discrimination with intrinsic coherence
Jin-Hua Zhang, Fu-Lin Zhang, Zhi-Xi Wang +2
We investigate the discrimination of pure-mixed (quantum filtering) and mixed-mixed states and compare their optimal success probability with the one for discriminating other pairs…
Berry phases for interacting spins in composite environments
Da-Bao Yang, Fu-Lin Zhang, Jing-Ling Chen
Due to the potential application in quantum information process, geometric phase of interacting system arouse many interests. Some physicists concentrate on the system in pure clas…
Quantum information masking basing on quantum teleportation
Wei-Min Shang, Fu-Lin Zhang, Jing-Ling Chen
The no-masking theorem says that masking quantum information is impossible in a bipartite scenario. However, there exist schemes to mask quantum states in multipartite systems. In…
Locality of three-qubit Greenberger-Horne-Zeilinger-symmetric states
Dian Zhu, Gang-Gang He, Fu-Lin Zhang
The hierarchy of nonlocality and entanglement in multipartite systems is one of the fundamental problems in quantum physics. We study this topic in three-qubit systems considering…
Prepotential approach to systems with dynamical symmetries
Yan Li, Fu-Lin Zhang, Jing-Ling Chen +1
A prepotential approach to constructing the quantum systems with dynamical symmetry is proposed. As applications, we derive generalizations of the hydrogen atom and harmonic oscill…
Fault-tolerant mixed boundary punctures on the toric code
Yao Shen, Fu-Lin Zhang
Defects on the toric code, a well-known exactly solvable Abelian anyon model, can exhibit non-Abelian statistical properties, which can be classified into punctures and twists. Ben…
Bounds of concurrence and their relation with fidelity and frontier states
Zhihao Ma, Fu-Lin Zhang, Dong-Ling Deng +1
The bounds of concurrence in [F. Mintert and A. Buchleitner, Phys. Rev. Lett. 98 (2007) 140505] and [C. Zhang \textit{et. al.}, Phys. Rev. A 78 (2008) 042308] are proved by using t…
Dirac equation with a magnetic field in 3D non-commutative phase space
Mai-Lin Liang, Ya-Bin Zhang, Rui-Lin Yang +1
For a spin-1/2 particle moving in a background magnetic field in noncommutative phase space, Dirac equation is solved when the particle is allowed to move off the plane that the ma…
Geometric interpretation for A-fidelity and its relation with Bures fidelity
Zhihao Ma, Fu-Lin Zhang, Jing-Ling Chen
A geometric interpretation for the A-fidelity between two states of a qubit system is presented, which leads to an upper bound of the Bures fidelity. The metrics defined based on t…
Requirement of Dissonance in Assisted Optimal State Discrimination
Fu-Lin Zhang, Jing-Ling Chen, L. C. Kwek +1
A fundamental problem in quantum information is to explore what kind of quantum correlations is responsible for successful completion of a quantum information procedure. Here we st…
Solving the Jaynes-Cummings Model with Shift Operators Constructed by Means of the Matrix-Diagonalizing Technique
Jie Zhou, Hong-Yi Su, Fu-Lin Zhang +2
The Jaynes-Cummings model is solved with the raising and lowering (shift) operators by using the matrix-diagonalizing technique. Bell nonlocality is also found present ubiquitously…
Anyonic quantum multipartite maskers in the Kitaev model
Yao Shen, Wei-Min Shang, Chi-Chun Zhou +1
The structure of quantum mechanics forbids a bipartite scenario for masking quantum information, however, it allows multipartite maskers. The Latin squares are found to be closely…
Networks with pixels embedding: a method to improve noise resistance in images classification
Yang Liu, Hai-Long Tu, Chi-Chun Zhou +2
In the task of image classification, usually, the network is sensitive to noises. For example, an image of cat with noises might be misclassified as an ostrich. Conventionally, to…
Probabilistic resumable quantum teleportation in high dimensions
Xiang Chen, Jin-Hua Zhang, Fu-Lin Zhang
Teleportation is a quantum information processes without classical counterparts, in which the sender can disembodied transfer unknown quantum states to the receiver. In probabilist…
Perturbative treatment for stationary state of local master equation
Jian-Ying Du, Fu-Lin Zhang
The local approach to construct master equation for a composite open system with a weak internal coupling is simple and seems reasonable. However, it is thermodynamic consistent on…
Quantum information masking of an arbitrary qudit can be realized in multipartite lower dimensional systems
Wei-Min Shang, Xing-Yan Fan, Fu-Lin Zhang +1
Quantum information masking is a protocol that hides the original quantum information from subsystems and spreads it over quantum correlation, which is available to multipartite ex…
Sequential State Discrimination and Requirement of Quantum Dissonance
Chao-Qian Pang, Fu-Lin Zhang, Li-Fang Xu +2
We study the procedure for sequential unambiguous state discrimination. A qubit is prepared in one of two possible states, and measured by two observers Bob and Charlie sequentiall…
Preparation of quantum correlations assisted by a steering Maxwell demon
Gang-Gang He, Fu-Lin Zhang
A Maxwell demon can reduce the entropy of a quantum system by performing measurements on its environment. The nonsignaling theorem prevents the demon from affecting the average sta…
Speed of disentanglement in multi-qubit systems under depolarizing channel
Fu-Lin Zhang, Yue Jiang, Mai-Lin Liang
We investigate the speed of disentanglement in the multiqubit systems under the local depolarizing channel, in which each qubit is independently coupled to the environment. We focu…
Dynamical Algebras in the 1+1 Dirac Oscillator and the Jaynes-Cummings Model
Wen-Ya Song, Fu-Lin Zhang
We study the algebraic structure of the one-dimensional Dirac oscillator by extending the concept of spin symmetry to a noncommutative case. An SO(4) algebra is found connecting th…
Discrimination of Coherent States via Atom-Field Interaction without Rotation Wave Approximation
Jin-Hua Zhang, Fu-Lin Zhang, Mai-Lin Liang +2
The quantum state discrimination is an important part of quantum information processing. We investigate the discrimination of coherent states through Jaynes-Cummings (JC) model int…
The Analytic Eigenvalue Structure of the 1+1 Dirac Oscillator
Bo-Xing Cao, Fu-Lin Zhang
We study the analytic structure for the eigenvalues of the one-dimensional Dirac oscillator, by analytically continuing its frequency on the complex plane. A twofold Riemann surfac…
Toy models of black hole, white hole and wormhole: thermal effects and information loss problem
Yu-Zhu Chen, Shi-Lin Li, Yu-Jie Chen +2
In this paper, by setting proper boundaries in the Minkowski spacetime, we construct three toy model spacetimes, a toy black hole, a toy white hole, and a toy wormhole. Based on th…
Metrics Of Quantum States
Zhi-Hao Ma, Fu-Lin Zhang, Jing-Ling Chen
In this paper, we study metrics of quantum states. These metrics are natural generalization of trace metric and Bures metric. We will prove that the metrics are joint convex and co…
Applications of Polynomial Algebras to Deformed Oscillator
Ci Song, Fu-Lin Zhang, Jing-Ling Chen
The polynomial algebra is a deformed SU(2) algebra. Here, we use polynomial algebra as a method to solve a series of deformed oscillators. Meanwhile, we find a series of physics sy…
Zitterbewegung in Bogoliubov's System
Yan Li, Hong-Yi Su, Fu-Lin Zhang +3
We show that Bogoliubov's quasiparticle in superfluid undergoes the Zitterbewegung, as a free relativistic Dirac's electron does. The expectation value of position, as wel…
Local-hidden-state models for T-states using finite shared randomness
Yuan-Yuan Zhang, Fu-Lin Zhang
The study of local models using finite shared randomness originates from the consideration about the cost of classically simulating entanglement in composite quantum systems. We co…
Higgs algebraic symmetry of screened system in a spherical geometry
Yan Li, Fu-Lin Zhang, Jing-Ling Chen
The orbits and the dynamical symmetries for the screened Coulomb potentials and isotropic harmonic oscillators have been studied by Wu and Zeng [Z. B. Wu and J. Y. Zeng, Phys. Rev.…
Perfect teleportation with a partially entangled quantum channel
Xiang Chen, Yao Shen, Fu-Lin Zhang
Quantum teleportation provides a way to transfer unknown quantum states from one system to another via an entangled state as a quantum channel without physical transmission of the…
Dynamical symmetry of Dirac hydrogen atom with spin symmetry and its connection with Ginocchio's oscillator
Fu-Lin Zhang, Bo Fu, Jing-Ling Chen
The Dirac hydrogen atom with spin symmetry is shown has a SO(4) symmetry. The generators are derived, and the corresponding Casimir operator leads to the energy spectrum naturally.…