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Thermalizing Quantum Machines: Dissipation and Entanglement

Ziman, Mário
Štelmachovič, Peter
Bužek, Vladimír
Published in Physical Review Letters. 2002, vol. 88, no. 9
Abstract We study the relaxation of a quantum system towards the thermal equilibrium using tools developed within the context of quantum information theory. We consider a model in which the system is a qubit, and reaches equilibrium after several successive two-qubit interactions (thermalizing machines) with qubits of a reservoir. We characterize completely the family of thermalizing machines. The model shows a tight link between dissipation, fluctuations, and the maximal entanglement that can be generated by the machines. The interplay of quantum and classical information processes that give rise to practical irreversibility is discussed.
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SCARANI, Valerio et al. Thermalizing Quantum Machines: Dissipation and Entanglement. In: Physical Review Letters, 2002, vol. 88, n° 9. https://archive-ouverte.unige.ch/unige:36816

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Deposited on : 2014-05-20

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