title: Initial decoherence in solid state qubits.
abstract: We study decoherence due to low frequency noise in Josephson qubits. Non-Markovian classical noise due to switching impurities determines inhomogeneous broadening of the signal. The theory is extended to include effects of high-frequency quantum noise, due to impurities or to the electromagnetic environment. The interplay of slow noise with intrinsically non-Gaussian noise sources may explain the rich physics observed in the spectroscopy and in the dynamics of charge based devices.
authors.affiliation: Dipartimento di Metodologie Fisiche e Chimiche, Universitá di Catania, Viale A. Doria 6, 95125 Catania, Italy. gfalci@dmfci.unict.it
authors.forename: G
authors.initials: G
authors.lastname: Falci
authors.forename: A
authors.initials: A
authors.lastname: D'Arrigo
authors.forename: A
authors.initials: A
authors.lastname: Mastellone
authors.forename: E
authors.initials: E
authors.lastname: Paladino