Physics – Quantum Physics
Scientific paper
2006-03-19
Physics
Quantum Physics
7 pages, comments welcome, references added
Scientific paper
We address the problem of quantum process tomography with the preparators producing states correlated with the environmental degrees of freedom that play role in the system-environment interactions. We discuss the physical situations, in which the dynamics is described by nonlinear, or noncompletely positive transformations. In particular, we show that arbitrary mapping $\varrho_{\rm in}\to\varrho_{\rm out}$ can be realized by using appropriate set of preparators and applying the unitary operation SWAP. The experimental ``realization'' of perfect NOT operation is presented. We address the problem of the verification of the compatibility of the preparator devices with the estimating process. The evolution map describing the dynamics in arbitrary time interval is known not to be completely positive, but still linear. The tomography and general properties of these maps are discussed.
No associations
LandOfFree
Quantum process tomography: the role of initial correlations 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 Quantum process tomography: the role of initial correlations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum process tomography: the role of initial correlations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-451144