期刊论文

Li, Wenlin

Song, HS (reprint author), Dalian Univ Technol, Sch Phys, Dalian 116024, Peoples R China.

Zhang, Wenzhao,Li, Chong,Song, Heshan

2017-07-14

PHYSICAL REVIEW E

SCIE、EI、PubMed、Scopus

J

96

1

012211

2470-0045

Although quantum synchronization phenomena and corresponding measures have been widely discussed recently, it is still an open question how to characterize directly the influence of nonlocal correlation, which is the key distinction for identifying classical and quantum synchronizations. In this paper, we present basic postulates for quantifying quantum synchronization based on the related theory in Mari's work [Phys. Rev. Lett. 111, 103605 (2013)], and we give a general formula of a quantum synchronization measure with clear physical interpretations. By introducing Pearson's parameter, we show that the obvious characteristics of our measure are the relativity and monotonicity. As an example, the measure is applied to describe synchronization among quantum optomechanical systems under a Markovian bath. We also show the potential by quantifying generalized synchronization and discrete variable synchronization with this measure.