Driven Spin Systems as Quantum Thermodynamic Machines: Fundamental Limits
We show that coupled two level systems like qubits studied in quantum information can be used as a thermodynamic machine. At least three qubits or spins are necessary and arranged in a chain. The system is interfaced between two split baths and the working spin in the middle is externally driven. Th...
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| Veröffentlicht in: | arXiv.org 2007-05 |
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| creator | Henrich, M J Michel, M Mahler, G |
| description | We show that coupled two level systems like qubits studied in quantum information can be used as a thermodynamic machine. At least three qubits or spins are necessary and arranged in a chain. The system is interfaced between two split baths and the working spin in the middle is externally driven. The machine performs Carnot-type cycles and is able to work as heat pump or engine depending on the temperature difference of the baths \(\Delta T\) and the energy differences in the spin system \(\Delta E\). It can be shown that the efficiency is a function of \(\Delta T\) and \(\Delta E\). |
| doi_str_mv | 10.48550/arxiv.0705.0075 |
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| subjects | Chain scission Heat pumps Physics - Statistical Mechanics Quantum phenomena Quantum theory Qubits (quantum computing) Temperature gradients |
| title | Driven Spin Systems as Quantum Thermodynamic Machines: Fundamental Limits |
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