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Decoherence in Josephson qubits
G. Falci, E. Paladino, R. Fazio
A high degree of quantum coherence is a crucial requirement for the implementation of quantum logic devices. Solid state nanodevices seem particularly promising from the point of v…
Decoherence due to discrete noise in Josephson qubits
E. Paladino, L. Faoro, G. Falci
We study decoherence produced by a discrete environment on a charge Josephson qubit by introducing a model of an environment of bistable fluctuators. In particular we address the e…
Dynamical suppression of telegraph and 1/f noise due to quantum bistable fluctuator
G. Falci, A. D'Arrigo, A. Mastellone +1
We study dynamical decoupling of a qubit from non gaussian quantum noise due to discrete sources, as bistable fluctuators and 1/f noise. We obtain analytic and numerical results fo…
Entanglement between two superconducting qubits via interaction with non-classical radiation
Mauro Paternostro, Giuseppe Falci, Myungshik Kim +1
We propose a scheme to physically interface superconducting nano-circuits and quantum optics. We address the transfer of quantum information between systems having different physic…
Josephson nanocircuit in the presence of linear quantum noise
E. Paladino, F. Taddei, G. Giaquinta +1
We derive the effective hamiltonian for a charge-Josephson qubit in a circuit with no use of phenomenological arguments, showing how energy renormalizations induced by the environm…