Quantum limits to dynamical evolution

Abstract

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 Hilbert space are estimated by the fidelity between the initial and final state. In this context, we also show that entanglement is necessary to achieve the ultimate evolution speed when the energy resources are distributed among all subsystems.

8 pages, 7 figures

References in corpus (1)

• The maximum speed of dynamical evolution

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