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- Chinese Academy of SciencesCN46 papers
- Purple Mountain ObservatoryCN36 papers
- National Astronomical ObservatoriesCN20 papers
- Nanjing Normal UniversityCN17 papers
- University of Hong KongHK16 papers
- Collaborative Innovation Center of Advanced MicrostructuresCN11 papers
- Center for Astrophysics Harvard & SmithsonianUS10 papers
- Institute of Theoretical PhysicsCN10 papers
- National Laboratory of Solid State Microstructures10 papers
- National Astronomical Observatory of JapanJP9 papers
- International Centre for Materials PhysicsCN8 papers
- Institute of High Energy PhysicsCN7 papers
7 papers · 2 filters
Local vertical measurements and violation of Bell inequality
Yang Xiang, Shi-Jie Xiong
For two qubits belonging to Alice and Bob, we derive an approach to setup the bound of Bell operator in the condition that Alice and Bob continue to perform local vertical measurem…
Mode entanglement of an electron in one-dimensional determined and random potentials
Longyan Gong, Peiqing Tong
By using the measure of concurrence, mode entanglement of an electron moving in four kinds of one-dimensional determined and random potentials is studied numerically. The extended…
Comment on ``Geometric phase of entangled spin pairs in a magnetic field''
Yang Xiang, Shi-Jie Xiong
The degree of entanglement between two spins may change due to interaction. About this we find that a wrong result in a recent work by Ge and Wadati [Phys. Rev. A {\bf72}, 052101(2…
Exact solution of a model of qubit dephasing due to telegraph noise
Bin Cheng, Qiang-Hua Wang, Robert Joynt
We present a general and exact formalism for finding the evolution of a quantum system subject to external telegraph noise. The various qubit decoherence rates are determined by th…
Entropy exchange, coherent information and concurrence
Yang Xiang, Shi-Jie Xiong
For a simple model we derive analytic expressions of entropy exchange and coherent information, from which relations between them and the concurrence are drawn. We find that in the…
Entanglement fidelity and measurement of entanglement preserving in quantum processes
Yang Xiang, Shi-Jie Xiong
The entanglement fidelity provides a measure of how well the entanglement between two subsystems is preserved in a quantum process. By using a simple model we show that in some cas…