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Quantum Cloning of Steering 被引量:1
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作者 Dian Zhu Wei-Min Shang +1 位作者 fu-lin zhang Jing-Ling Chen 《Chinese Physics Letters》 SCIE EI CAS CSCD 2022年第7期9-13,共5页
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 that, in general, this property cannot... 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 that, in general, this property cannot be perfectly cloned by any joint operation between a steered subsystem and a third system. Perfect cloning is viable if and only if the initial state is of zero discord. We also investigate the process of cloning the steered qubit of a Bell state using a universal cloning machine. Einstein–Podolsky–Rosen(EPR) steering, which is a type of quantum correlation existing in the states without a local-hidden-state model, is observed in the two copy subsystems. This contradicts the conclusion of no-cloning of quantum steering(EPR steering) [C. Y. Chiu et al.,npj Quantum Inf. 2, 16020(2016)] based on a mutual information criterion for EPR steering. 展开更多
关键词 Quantum Cloning of Steering
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Probabilistic resumable quantum teleportation in high dimensions
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作者 Xiang Chen Jin-Hua zhang fu-lin zhang 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第3期165-169,共5页
Teleportation is a quantum information process without classical counterparts, in which the sender can disembodiedly transfer unknown quantum states to the receiver. In probabilistic teleportation through a partial en... Teleportation is a quantum information process without classical counterparts, in which the sender can disembodiedly transfer unknown quantum states to the receiver. In probabilistic teleportation through a partial entangled quantum channel,the transmission is exact(with fidelity 1), but may fail in a probability and the initial state is destroyed simultaneously.We propose a scheme for nondestructive probabilistic teleportation of high-dimensional quantum states. With the aid of an ancilla in the hands of the sender, the initial quantum information can be recovered when teleportation fails. The ancilla acts as a quantum apparatus to measure the sender’s subsystem. Erasing the information recorded in it can resume the initial state. 展开更多
关键词 probabilistic teleportation ENTANGLEMENT successful probability
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Dynamical Algebras in the 1+1 Dirac Oscillator and the Jaynes–Cummings Model
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作者 Wen-Ya Song fu-lin zhang 《Chinese Physics Letters》 SCIE CAS CSCD 2020年第5期1-4,共4页
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 the eigenstates of the Dirac oscillator,i... 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 the eigenstates of the Dirac oscillator,in which the two elements of Cartan subalgebra are conserved quantities.Similar results are obtained in the Jaynes-Cummings model. 展开更多
关键词 DIRAC OSCILLATOR CUMMINGS
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The Analytic Eigenvalue Structure of the 1+1 Dirac Oscillator
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作者 Bo-Xing Cao fu-lin zhang 《Chinese Physics Letters》 SCIE CAS CSCD 2020年第9期10-14,共5页
We study the analytic structure for the eigenvalues of the one-dimensional Dirac oscillator,by analytically continning its frequency on the complex plane.A twofold Riemann surface is found,connecting the two states of... We study the analytic structure for the eigenvalues of the one-dimensional Dirac oscillator,by analytically continning its frequency on the complex plane.A twofold Riemann surface is found,connecting the two states of a pair of particle and antiparticle.One can,at least in principle,accomplish the transition from a positive energy state to its antiparticle state by moving the frequency continuously on the complex plane,without changing the Hamiltonian after transition.This result provides a visual explanation for the absence of a negative energy state with the quantum number n=0. 展开更多
关键词 transition. DIRAC connecting
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Solving the Jaynes-Cummings Model with Shift Operators Constructed by Means of the Matrix-Diagonalizing Technique
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作者 Jie Zhou Hong-Yi Su +2 位作者 fu-lin zhang Hong-Biao zhang Jing-Ling Chen 《Chinese Physics Letters》 SCIE CAS CSCD 2018年第1期10-13,共4页
The Jaynes-Cummings model is solved with the raising and lowering(shift)operators using the matrix-diagonalizing technique.Bell nonlocality is also found to be present ubiquitously in the excitation states of the model.
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Unsteady state precipitation of M_(23)C_(6)carbides during thermal cycling in reduced activation steel manufactured by laser melting deposition
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作者 Ji-xin Hou fu-lin zhang +5 位作者 Zhi-xin Xia Yun-he Yu Hai-ying Fu Shu-hai Huang Qian An Chi zhang 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2023年第3期557-568,共12页
The temperature field distribution and thermal history of Fe-9Cr2WVTa reduced activation steel prepared by laser melting deposition(LMD)have been calculated with Gaussian and Ring laser beams,and the nucleation and gr... The temperature field distribution and thermal history of Fe-9Cr2WVTa reduced activation steel prepared by laser melting deposition(LMD)have been calculated with Gaussian and Ring laser beams,and the nucleation and growth behaviors of M_(23)C_(6)precipitates in the 1st,7th and 19th layers have been calculated using the modified classical nucleation theory and Svoboda Fischer Fratzl Kozeschnik model.The energy distribution shows W-shape with Ring laser beam while it shows V-shape with Gaussian laser beam,which results in the more uniform M_(23)C_(6)size in the same layer with Ring laser beam.Precipitates in the bottom(i.e.,the 1st layer)have the minimum size and the size increases with the layer number with Gaussian and Ring laser beams.The temperature history,the instantaneous nucleation rate and the size evolution of M_(23)C_(6)have been systematically discussed.The results indicate that the nucleation,growth and re-dissolution of precipitates in reduced activation steel depend on the amount of energy absorbed in the thermal cycle during LMD.The continuous accumulation of energy during the thermal cycle leads to larger M_(23)C_(6)at the top area.The unsteady state precipitation dynamics of M_(23)C_(6)carbides during thermal cycling are consistent with the simulation results. 展开更多
关键词 Laser melting deposition Reduced activation steel Unsteady state precipitation Heat source model
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Discrimination of coherent states via atom–field interaction without rotation wave approximation
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作者 Jin-Hua zhang fu-lin zhang +2 位作者 Mai-Lin Liang Zhi-Xi Wang Shao-Ming Fei 《Communications in Theoretical Physics》 SCIE CAS CSCD 2023年第6期78-85,共8页
Quantum state discrimination is an important part of quantum information processing.We investigate the discrimination of coherent states through a Jaynes-Cummings(JC)model interaction between the field and the ancilla... Quantum state discrimination is an important part of quantum information processing.We investigate the discrimination of coherent states through a Jaynes-Cummings(JC)model interaction between the field and the ancilla without rotation wave approximation(RWA).We show that the minimum failure probability can be reduced as RWA is eliminated from the JC model and the non-RWA terms accompanied by the quantum effects of fields(e.g.the virtualphoton process in the JC model without RWA)can enhance the state discrimination.The JC model without RWA for unambiguous state discrimination is superior to ambiguous state discrimination,particularly when the number of sequential measurements increases.Unambiguous state discrimination implemented via the non-RWA JC model is beneficial to saving resource costs. 展开更多
关键词 state discrimination Jaynes-Cummings model rotation wave approximation
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Perturbative Treatment for Stationary State of Local Master Equation
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作者 aian-Ying Du fu-lin zhang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2018年第7期38-42,共5页
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 only when the subsystems are resonantly... 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 only when the subsystems are resonantly coupled. Efforts are being made to understand the inconsistency and test the validity of the local master equation. We present a perturbative method to solve the steady-state solutions of linear local master equations, which are demonstrated by two simple models. The solving process shows the stationary state as the result of competition between incoherent operations and the unitary creating quantum coherence, and consequently relate quantum coherence with thermodynamic consistency. 展开更多
关键词 perturbation theory stationary state local master equation quantum coherence thermodynanficconsistency
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Intermediate symmetric construction of transformation between anyon and Gentile statistics
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作者 Yao Shen fu-lin zhang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2021年第6期126-130,共5页
Gentile statistics describes fractional statistical systems in the occupation number representation.Anyon statistics researches those systems in the winding number representation.Both of them are intermediate statisti... Gentile statistics describes fractional statistical systems in the occupation number representation.Anyon statistics researches those systems in the winding number representation.Both of them are intermediate statistics between Bose–Einstein and Fermi–Dirac statistics.The second quantization of Gentile statistics shows a lot of advantages.According to the symmetry requirement of the wave function and the property of braiding,we give the general construction of transformation between anyon and Gentile statistics.In other words,we introduce the second quantization form of anyons in an easier way.This construction is a correspondence between two fractional statistics and gives a new description of anyon.Basic relations of second quantization operators,the coherent state and Berry phase are also discussed. 展开更多
关键词 gentile statistics ANYON fractional statistics computational method
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