On the kind of entanglement that speeds up quantum evolution [PDF]
Florian FröwisThe "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.View original: http://arxiv.org/abs/1204.1212
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