期刊
PHYSICAL REVIEW LETTERS
卷 115, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.115.130501
关键词
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资金
- ARO MURI [W911NF-11-1-0268]
- NSF [PHY-1212413]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1212413] Funding Source: National Science Foundation
We determine the minimum energy required to control the evolution of any mesoscopic quantum system in the presence of arbitrary Markovian noise processes. This result provides the mesoscopic equivalent of the fundamental cost of refrigeration, sets the minimum power consumption of mesoscopic devices that operate out of equilibrium, and allows one to calculate the efficiency of any control protocol, whether it be open-loop or feedback control. As examples, we calculate the energy cost of maintaining a qubit in the ground state and the efficiency of resolved-sideband cooling of nano-mechanical resonators, and discuss the energy cost of quantum information processing.
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