5 papers
Entanglement Concentration of Individual Photon Pairs via Linear Optical Logic
Chuanwei Zhang
We propose a scheme for concentrating nonmaximally pure and mixed polarization-entangled state of individual photon pairs. The scheme uses only simple linear optical elements and m…
Conditions for manipulation of a set of entangled pure states
Chuan-Wei Zhang, Chuan-Feng Li, Guang-Can Guo
We derive a sufficient condition for a set of pure states, each entangled in two remote -dimensional systems, to be transformable to -dimensional-subspace equivalent entangle…
Universal Quantum Entanglement Concentration Gate
Zi-Yang Wang, Chuan-Wei Zhang, Chuan-Feng Li +1
We construct a Universal Quantum Entanglement Concentration Gate (QEC-Gate). Special times operations of QEC-Gate can transform a pure 2-level bipartite entangled state to nearly m…
No-Concentrating Theorem of Pure Entangled States
Chuan-Wei Zhang, Chuan-Feng Li, Guang-Can Guo
Suppose two distant observers Alice and Bob share a pure biparticle entangled state secretly chosen from a set, it is shown that Alice (Bob) can probabilistic concentrate the state…
Realization of Probabilistic Identification and Clone of Quantum-States II Multiparticles System
Chuan-Wei Zhang, Chuan-Feng Li, Guang-Can Guo
We realize the probabilistic cloning and identifying linear independent quantum states of multi-particles system, given prior probability, with universal quantum logic gates using…