Physics – Quantum Physics
Scientific paper
2008-09-28
Phys. Rev. A 80, 052319 (2009)
Physics
Quantum Physics
5 pages, 2 figures
Scientific paper
10.1103/PhysRevA.80.052319
We investigate the propagation of information through one-dimensional quantum chains in fluctuating external fields. We find that information propagation is suppressed, but in a quite different way compared to the situation with static disorder. We study two settings: (i) a general model where an unobservable fluctuating field acts as a source of decoherence; (ii) the XX model with both observable and unobservable fluctuating fields. In the first setting we establish a noise threshold below which information can propagate ballistically and above which information is localised. In the second setting we find localisation for all levels of unobservable noise, whilst an observable field can yield diffusive propagation of information.
Burrell Christian K.
Eisert Jens
Osborne Tobias J.
No associations
LandOfFree
Information propagation through quantum chains with fluctuating disorder 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 Information propagation through quantum chains with fluctuating disorder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Information propagation through quantum chains with fluctuating disorder will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-353636