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Master equations for correlated quantum channels | | Vittorio Giovannetti
; G. Massimo Palma
; | | Date: |
23 May 2011 | | Abstract: | We derive the general form of a master equation describing the interaction of
an arbitrary multipartite quantum system, consisting of a set of subsystems,
with an environment, consisting of a large number of sub-envirobments. Each
subsystem "collides" with the same sequence of sub-environments which, in
between the collisions, evolve according to a map that mimics relaxations
effects. No assumption is made on the specific nature of neither the system nor
the environment. In the weak coupling regime, we show that the collisional
model produces a correlated Markovian evolution for the joint density matrix of
the multipartite system. The associated Linblad super-operator contains
pairwise terms describing cross correlation between the different subsystems. | | Source: | arXiv, 1105.4506 | | Services: | Forum | Review | PDF | Favorites | |
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