Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
Quantum correlation of qubit-reservoir system in dissipative environments
oleh: Tao Wu, Jiadong Shi, Lizhi Yu, Juan He, Liu Ye
Format: | Article |
---|---|
Diterbitkan: | Nature Portfolio 2017-08-01 |
Deskripsi
Abstract In this work, the dynamics of quantum correlation (QC) in terms of geometric discord and its transfer coupled with dissipative reservoirs are investigated. Taken two canonical cases where the qubits of interest are initially prepared in extended Werner-like state and W-like states into account, we specifically reveal the dynamical behaviors of the geometric discord as each qubit locally interacts with its surrounding infinite degree-of-freedom reservoir. In the scenarios, the short-term and long-term dynamics of the geometric discord for the qubit- and reservoir-subsystem as well as its transfers between them are observed detailedly. It turns out that the geometric discord of qubit-subsystem decays asymptotically to zero while the counterpart of reservoir-subsystem can revive from time tâ=â0 to steady value, which sheds light on a transfer of the discord from the qubit-subsystem to the corresponding reservoir-subsystem.