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Quantum limits to dynamical evolution
Vittorio Giovannetti, Seth Lloyd, Lorenzo Maccone
We establish the minimum time it takes for an initial state of mean energy E and energy spread DE to move from its initial configuration by a predetermined amount. Distances in Hil…
Characterizing the entanglement of bipartite quantum systems
Vittorio Giovannetti, Stefano Mancini, David Vitali +1
We derive a separability criterion for bipartite quantum systems which generalizes the already known criteria. It is based on observables having generic commutation relations. We t…
Stationary entanglement between macroscopic mechanical oscillators
Stefano Mancini, David Vitali, Vittorio Giovannetti +1
We show that the optomechanical coupling between an optical cavity mode and the two movable cavity end mirrors is able to entangle two different macroscopic oscillation modes of th…
Extended phase-matching conditions for improved entanglement generation
Vittorio Giovannetti, Lorenzo Maccone, Jeffrey H. Shapiro +1
Extended phase-matching conditions for spontaneous parametric down-conversion are examined. By augmenting the conventional phase-matching conditions, they permit the creation of a…
The role of entanglement in dynamical evolution
Vittorio Giovannetti, Seth Lloyd, Lorenzo Maccone
Entanglement or entanglement generating interactions permit to achieve the maximum allowed speed in the dynamical evolution of a composite system, when the energy resources are dis…