Europhys. Lett.
Volume 62, Number 5, June 2003
Page(s) 615 - 621
Section General
Published online 01 May 2003
DOI: 10.1209/epl/i2003-00418-8
Europhys. Lett., 62 (5) , pp. 615-621 (2003)

The role of entanglement in dynamical evolution

V. Giovannetti1, S. Lloyd1, 2 and L. Maccone1

1  Massachusetts Institute of Technology, Research Laboratory of Electronics 77 Massachusetts Ave., Cambridge, MA 02139, USA
2  Massachusetts Institute of Technology, Department of Mechanical Engineering 77 Massachusetts Ave., Cambridge, MA 02139, USA

(Received 14 February 2003; accepted in final form 8 April 2003)

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 distributed among subsystems. The cases of pre-existing entanglement and of entanglement-building interactions are separately addressed. The role of classical correlations is also discussed.

03.65.-w - Quantum mechanics.
03.65.Ud - Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.).
03.67.-a - Quantum information.

© EDP Sciences 2003