期刊
PHYSICAL REVIEW LETTERS
卷 125, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.040601
关键词
-
资金
- John Templeton Foundation
- UMass Boston Project [P20150000029279]
- DOE [DE-SC0019515]
- AFOSR MURI project Scalable Certification of Quantum Computing Devices and Networks,DOE ASCR Accelerated Research in Quantum Computing program [DE-SC0020312]
- DOE BES Materials and Chemical Sciences Research for QuantumInformation Science program [DE-SC0019449]
- DOE ASCR Quantum Testbed Pathfinder program [DE-SC0019040]
- NSF PFCQC program
- AFOSR
- ARO MURI
- NSF PFC at JQI
- ARL CDQI
- U.S. Department of Energy (DOE) [DE-SC0019515] Funding Source: U.S. Department of Energy (DOE)
We study the connection between the charging power of quantum batteries and the fluctuations of the extractable work. We prove that in order to have a nonzero rate of change of the extractable work, the state rho(W) of the battery cannot be an eigenstatc of a free energy operator, defined by F H-W + beta(-1) log(rho(W)), where H-W is the Hamiltonian of the battery and beta is the inverse temperature of a reference thermal bath with respect to which the extractable work is calculated. We do so by proving that fluctuations in the free energy operator upper bound the charging power of a quantum battery. Our findings also suggest that quantum coherence in the battery enhances the charging process, which we illustrate on a toy model of a heat engine.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据