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13 papers · 2 filters
Charge Oscillations in Superconducting Nanodevices Coupled to External Environments
Robert Alicki, Fabio Benatti, Roberto Floreanini
Charge oscillations in certain nanodevices, more specifically the so-called Superconducting Cooper Pair Boxes (SCB), are usually interpreted as an effect of macroscopic quantum coh…
Proofs of nonlocality without inequalities revisited
GianCarlo Ghirardi, Luca Marinatto
We discuss critically the so-called nonlocality without inequalities proofs for bipartite quantum states, we generalize them and we analyze their relation with the Clauser-Horne in…
On a recent proposal of faster than light quantum communication
A. Bassi, G. C. Ghirardi
In a recent paper, A.Y. Shiekh has discussed an experimental set-up which, in his opinion, should make possible faster-than-light communication using the collapse of the quantum wa…
Relaxation to equilibrium driven via indirect control in Markovian dynamics
Raffaele Romano
We characterize to what extent it is possible to modify the stationary states of a quantum dynamical semigroup, that describes the irreversible evolution of a two-level system, by…
Entanglement magnification induced by local manipulations
Raffaele Romano
We study the entanglement capability of the evolution of a pair of qubits evolving under unitary dynamics, when the local dynamical parameters cannot be modified during the time-ev…
Optimal generation of entanglement under local control
Raffaele Romano, Alessio Del Fabbro
We study the optimal generation of entanglement between two qubits subject to local unitary control. With the only assumptions of linear control and unitary dynamics, by means of a…