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4 papers · 2 filters
Manipulating energy and spin currents in nonequilibrium systems of interacting qubits
Vladislav Popkov, Roberto Livi
We consider generic interacting chain of qubits, which are coupled at the edges to baths of fixed polarizations. We can determine the nonequilibrium steady states, described by the…
Parametric representation of open quantum systems and crossover from quantum to classical environment
Dario Calvani, Alessandro Cuccoli, Nikitas Gidopoulos +1
We propose an approach to the study of open quantum systems based on a parametric representation of the principal system. The representation is obtained introducing generalized coh…
Quantum channels and memory effects
F. Caruso, V. Giovannetti, C. Lupo +1
Any physical process can be represented as a quantum channel mapping an initial state to a final state. Hence it can be characterized from the point of view of communication theory…
99%-fidelity ballistic quantum-state transfer through long uniform channels
T. J. G. Apollaro, L. Banchi, A. Cuccoli +2
Quantum-state transfer with fidelity higher than 0.99 can be achieved in the ballistic regime of an arbitrarily long one-dimensional chain with uniform nearest-neighbor interaction…