Emergence of thermodynamic behavior within composite quantum systems

Details Emergence of thermodynamic behavior within composite quantum systems Emergence of thermodynamic behavior within composite quantum systems

2005-09-15

arxiv.org/abs/quant-ph/0509110v1

Physica E, 29, 53-65 (2005)

Physics

Quantum Physics

12 pages, 12 figures, accepted for publication in Physica E

Scientific paper

10.1016/j.physe.2005.05.001

Entanglement within a given device provides a potential resource for quantum information processing. Entanglement between system and environment leads to decoherence (thus suppressing non-classical features within the system) but also opens up a route to robust and universal control. The latter is related to thermodynamic equilibrium, a generic behavior of bi-partite quantum systems. Fingerprints of this equilibrium behavior (including relaxation and stability) show up already far from the thermodynamic limit, where a complete solution of the underlying Schroedinger dynamics of the total system is still feasible.

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