Quantum limits to dynamical evolution

Journal Article · Thu May 01 00:00:00 EDT 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.67.052109· OSTI ID:20636348

Giovannetti, Vittorio; Maccone, Lorenzo ^[1]; Lloyd, Seth ^[1]

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1. Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139 (United States)

We establish the minimum time it takes for an initial state of mean energy E and energy spread {delta}E to move from its initial configuration by a predetermined amount. Distances in Hilbert space are estimated by the fidelity between the initial and final states. In this context, we study the role of entanglement among subsystems in speeding up the dynamics of a composite system.

• OSTI ID: 20636348
• Journal Information: Physical Review. A, Vol. 67, Issue 5; Other Information: DOI: 10.1103/PhysRevA.67.052109; (c) 2003 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CORRELATIONS
DISTANCE
EIGENFUNCTIONS
EIGENVALUES
ENERGY LEVELS
EVOLUTION
HILBERT SPACE
QUANTUM MECHANICS