Multipartite quantum correlations in open quantum systems
نویسندگان
چکیده
منابع مشابه
Multipartite quantum correlations in open quantum systems
In this paper, we present a measure of quantum correlation for a multipartite system, defined as the sum of the correlations for all possible partitions. Our measure can be defined for quantum discord (QD), geometric quantum discord or even for entanglement of formation (EOF). For tripartite pure states, we show that the multipartite measures for the QD and the EOF are equivalent, which allows ...
متن کاملPartial correlations in multipartite quantum systems
Article history: Received 20 June 2014 Received in revised form 21 July 2014 Accepted 8 August 2014 Available online 19 August 2014
متن کاملGenuine quantum and classical correlations in multipartite systems.
Generalizing the quantifiers used to classify correlations in bipartite systems, we define genuine total, quantum, and classical correlations in multipartite systems. The measure we give is based on the use of relative entropy to quantify the distance between two density matrices. Moreover, we show that, for pure states of three qubits, both quantum and classical bipartite correlations obey a l...
متن کاملA note on Borromean correlations in multipartite quantum systems
If a pure state of a multipartite quantum system is Borromean, that is, such that its density matrix becomes product after tracing out any its component then the initial state is product itself. This shows the essentially classical nature of Borromean correlations which can not be achieved by entangled pure states. A random vector (A1, . . . , An) of length N is said to be Borromean 1 correlate...
متن کاملA study of quantum correlations in open quantum systems
In this work, we study quantum correlations in mixed states. The states studied are modeled by a two-qubit system interacting with its environment via a quantum nondemolition (purely dephasing) as well as dissipative type of interaction. The entanglement dynamics of this two qubit system is analyzed and the existence of entangled states which do not violate Bell’s inequality, but can still be u...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2013
ISSN: 1367-2630
DOI: 10.1088/1367-2630/15/4/043023