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Multiqubit entanglement witness

Lin Chen, Yi-Xin Chen

We introduce a feasible method of constructing the entanglement witness that detects genuine multiqubit entanglement in the vicinity of a given pure multiqubit state. We illustrate our method in the scenario of constructing the witnesses for the multiqubit states that are most often investigated theoretically and experimentally. It is shown that our method can construct the effective witnesses for experiments. We also investigate the entanglement detection of symmetric states and mixed states.

arXiv:0705.2665Physical Review AAug 24, 200722 citations

Entanglement measure based on optimal entanglement witness

Nan Yang, Jiaji Wu, Xianyun Dong +3 more

arXiv:2402.11865Quantum Information ProcessingJul 29, 20231 citation

Detection of the ideal resource for multiqubit teleportation

Ming‐Jing Zhao, Bin Chen, Shao-Ming Fei

We give a sufficient condition for detecting the entanglement resource for perfect multiqubit teleportation. The criterion involves only local measurements on some complementary observables and can be experimentally implemented. It is also a necessary condition for full separability of multiqubit states. Moreover, by proving the optimality of teleportation witnesses, we solve the open problem in Phys. Rev. A 86 , 032315 (2012).

Chinese Physics BJun 25, 20153 citations

Entanglement witnesses for many qubit systems

Justyna P. Zwolak, Dariusz Chru 'sci 'nski

Bulletin of the American Physical SocietyMar 21, 20130 citations

Detection of the ideal resource for multiqubit teleportation

赵明镜, Bin Chen, 费少明

We give a sufficient condition for detecting the entanglement resource for perfect multiqubit teleportation. The criterion involves only local measurements on some complementary observables and can be experimentally implemented. It is also a necessary condition for full separability of multiqubit states. Moreover, by proving the optimality of teleportation witnesses, we solve the open problem in Phys. Rev. A 86, 032315(2012).

中国物理B：英文版Jan 1, 20150 citations

Construction of optimal witness for unknown two-qubit entanglement

S.-S. B. Lee, H.S. Park, Ha Eum Kim +2 more

Bulletin of the American Physical SocietyMar 22, 20110 citations

Multiqubits entanglement based on optimal witness

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