Quantum limits to dynamical evolution

Details Quantum limits to dynamical evolution Quantum limits to dynamical evolution

2002-10-29

arxiv.org/abs/quant-ph/0210197v1

Phys. Rev. A 67, 052109 (2003)

Physics

Quantum Physics

8 pages, 7 figures

Scientific paper

10.1103/PhysRevA.67.052109

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.

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