On the quantum, classical and total amount of correlations in a quantum state

Details On the quantum, classical and total amount of correlations in a quantum state On the quantum, classical and total amount of correlations in a quantum state

2004-10-12

arxiv.org/abs/quant-ph/0410091v2

Phys Rev A, vol 72, 032317 (2005).

Physics

Quantum Physics

12 pages ReVTeX4, 2 eps figures. v2 has some arguments clarified and references updated

Scientific paper

10.1103/PhysRevA.72.032317

We give an operational definition of the quantum, classical and total amount of correlations in a bipartite quantum state. We argue that these quantities can be defined via the amount of work (noise) that is required to erase (destroy) the correlations: for the total correlation, we have to erase completely, for the quantum correlation one has to erase until a separable state is obtained, and the classical correlation is the maximal correlation left after erasing the quantum correlations. In particular, we show that the total amount of correlations is equal to the quantum mutual information, thus providing it with a direct operational interpretation for the first time. As a byproduct, we obtain a direct, operational and elementary proof of strong subadditivity of quantum entropy.

Affiliated with

Also associated with

No associations

Rating

On the quantum, classical and total amount of correlations in a quantum state does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On the quantum, classical and total amount of correlations in a quantum state, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the quantum, classical and total amount of correlations in a quantum state will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-718692