Abstract
We investigated coupled-qubit-based thermal machines powered by quantum measurements and feedback. We considered two different versions of the machine: (1) a quantum Maxwell’s demon, where the coupled-qubit system is connected to a detachable single shared bath, and (2) a measurement-assisted refrigerator, where the coupled-qubit system is in contact with a hot and cold bath. In the quantum Maxwell’s demon case, we discuss both discrete and continuous measurements. We found that the power output from a single qubit-based device can be improved by coupling it to the second qubit. We further found that the simultaneous measurement of both qubits can produce higher net heat extraction compared to two setups operated in parallel where only single-qubit measurements are performed. In the refrigerator case, we used continuous measurement and unitary operations to power the coupled-qubit-based refrigerator. We found that the cooling power of a refrigerator operated with swap operations can be enhanced by performing suitable measurements.
Funder
U.S. Department of Energy (DOE), Office of Sciences, Basic Energy Sciences
Subject
General Physics and Astronomy
Reference103 articles.
1. Towards quantum thermodynamics in electronic circuits;Pekola;Nat. Phys.,2015
2. Quantum thermodynamics;Vinjanampathy;Contemp. Phys.,2016
3. Fundamental aspects of steady-state conversion of heat to work at the nanoscale;Benenti;Phys. Rep.,2017
4. Binder, F., Correa, L., Gogolin, C., Anders, J., and Adesso, G. (2019). Thermodynamics in the Quantum Regime: Fundamental Aspects and New Directions, Springer International Publishing. Fundamental Theories of Physics.
5. Irreversible entropy production: From classical to quantum;Landi;Rev. Mod. Phys.,2021
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献