On the kind of entanglement that speeds up quantum evolution

Details On the kind of entanglement that speeds up quantum evolution On the kind of entanglement that speeds up quantum evolution

2012-04-05

arxiv.org/abs/1204.1212v1

Physics

Quantum Physics

5+ pages, 2 figures. Comments are welcome!

Scientific paper

The "speed" of unitary quantum evolution was recently shown to be connected
to entanglement in multipartite quantum systems. Here, we discuss a tighter
version of the Mandelstam-Tamm uncertainty relation that depends on the Fisher
information. The interplay between entanglement and Fisher information sheds
new light on the origin of fast quantum time evolution of entangled states.

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