Time-invariant entanglement and sudden death of non-locality

Autor: Liu, Bi-Heng, Hu, Xiao-Min, Chen, Jiang-Shan, Zhang, Chao, Huang, Yun-Feng, Li, Chuan-Feng, Guo, Guang-Can, Karpat, Göktuğ, Fanchini, Felipe F., Piilo, Jyrki, Maniscalco, Sabrina
Rok vydání: 2016
Předmět:
Zdroj: Phys. Rev. A 94, 062107 (2016)
Druh dokumentu: Working Paper
DOI: 10.1103/PhysRevA.94.062107
Popis: We investigate both theoretically and experimentally the dynamics of entanglement and non-locality for two qubits immersed in a global pure dephasing environment. We demonstrate the existence of a class of states for which entanglement is forever frozen during the dynamics, even if the state of the system does evolve. At the same time non-local correlations, quantified by the violation of the Clauser-Horne-Shimony-Holt (CHSH) inequality, either undergo sudden death or are trapped during the dynamics.
Comment: 5 pages, 5 figures
Databáze: arXiv