Asymptotically decreasing Lieb-Robinson velocity for a class of dissipative quantum dynamics

Autor(en)

Benoit Descamps

Abstrakt

We study the velocity of the propagation of information for a class of local dissipative quantum dynamics. This finite velocity is expressed by the so-called Lieb-Robinson bound. Besides the properties of the already studied dynamics, we consider an additional relation that expresses the propagation of certain subspaces. The previously derived bounds did not reflect the dissipative character of the dynamics and yielded the same result as for the reversible case. In this article, we show that for this class the velocity of propagation of information is time dependent and decays in time towards a smaller velocity. In some cases the velocity becomes zero. At the end of the article, the exponential clustering theorem of general frustration free local Markovian dynamics is revisited.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Journal

Journal of Mathematical Physics

Band

54

Anzahl der Seiten

11

ISSN

0022-2488

DOI

https://doi.org/10.1063/1.4820785

Publikationsdatum

09-2013

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik, 103019 Mathematische Physik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/2bac716d-1aff-42d5-953e-5cbf1b340208