Structured environments in solid state systems: crossover from Gaussian  to non-Gaussian behavior

Paladino, Elisabetta; Maugeri, A. G.; Sassetti, M.; Falci, Giuseppe; Weiss, U.

doi:10.1016/j.physe.2007.05.002

The variety of noise sources typical of the solid state represents the main limitation toward the realization of controllable and reliable quantum nanocircuits, as those allowing quantum computation. Such ``structured environments{''} are characterized by a non-monotonous noise spectrum sometimes showing resonances at selected frequencies. Here we focus on a prototype structured environment model: a two-state impurity linearly coupled to a dissipative harmonic bath. We identify the time scale separating Gaussian and non-Gaussian dynamical regimes of the Spin-Boson impurity. By using a path-integral approach we show that a qubit interacting with such a structured bath may probe the variety of environmental dynamical regimes.

Titolo:	Structured environments in solid state systems: crossover from Gaussian to non-Gaussian behavior
Autori interni:	PALADINO, ELISABETTA A. G. MAUGERI M. SASSETTI FALCI, Giuseppe U. WEISS mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2007
Rivista:	PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Handle:	http://hdl.handle.net/20.500.11769/5096
Appare nelle tipologie:	1.1 Articolo in rivista

File in questo prodotto:

Non ci sono file associati a questo prodotto.

Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.11769/5096

Citazioni

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

CINECA IRIS Institutional Research Information System

File in questo prodotto: