Quantum Annealing of a Disordered Magnet

Quantum Annealing of a Disordered Magnet

Traditional simulated annealing uses thermal fluctuations for convergence in optimization problems. Quantum tunneling provides a different mechanism for moving between states, with the potential for reduced time scales. Thermal and quantum annealing are compared in a model disordered magnet, where t...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 1999-04, Vol.284 (5415), p.779-781
Hauptverfasser: Brooke, J., Bitko, D., Rosenbaum, T. F., Aeppli, G.
Format: Artikel
Sprache:eng
Schlagworte:
Algorithms
Annealing
Climate
Computers
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cooling
Domain effects, magnetization curves, and hysteresis
Energy
Exact sciences and technology
Ground state
Magnetic annealing and temperature-hysteresis effects
Magnetic fields
Magnetic properties and materials
Magnetism
Magnets
Mathematical minima
Phase diagrams
Physics
Quantum computers
Quantum Mechanics
Quantum theory
Quantum tunneling
Tunneling (Physics)
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Beschreibung
Zusammenfassung:Traditional simulated annealing uses thermal fluctuations for convergence in optimization problems. Quantum tunneling provides a different mechanism for moving between states, with the potential for reduced time scales. Thermal and quantum annealing are compared in a model disordered magnet, where the effects of quantum mechanics can be tuned by varying an applied magnetic field. The results indicate that quantum annealing hastens convergence to the optimum state.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.284.5415.779