A scheme for implementing quantum batteries in a realizable and controllable platform based on a trapped ion chain driven by a mechanical oscillator is proposed.The effects of the hopping interaction between the two-l...A scheme for implementing quantum batteries in a realizable and controllable platform based on a trapped ion chain driven by a mechanical oscillator is proposed.The effects of the hopping interaction between the two-level ions and the coupling interaction between the ions and the external mechanical oscillator on the charging process of the battery are investigated.The importance of the counter-rotating wave terms in the system's Hamiltonian,which are often ignored,is analyzed,and it is found that the charging energy and the ergotropy of the battery are dramatically affected by the counterrotating wave terms.The quantum phase transition of the two-level system is restrained by the counter-rotating wave terms due to the destruction of the quantum coherence.Lastly,the power-law dependence of the charging process on the distance between the ions is discussed.Our theoretical analysis provides a solid foundation for the development of a practical quantum battery.展开更多
As a potential alternative energy source in the quantum regime,a quantum battery inevitably experiences a process where the extracted work decreases due to the environmental decoherence.To inhibit the energy dissipati...As a potential alternative energy source in the quantum regime,a quantum battery inevitably experiences a process where the extracted work decreases due to the environmental decoherence.To inhibit the energy dissipation,we have put forward a scheme of a moving atom battery in a lossy cavity coupled to a structured environment.We investigate the dynamics of the maximally extracted work called the ergotropy by the open quantum system approach.It is found out that the decay of quantum work is significantly retarded in the non-Markovian environment.In contrast to the static case,the storage performance of the quantum battery is improved when the atom is in motion.The effect of energy preservation becomes more pronounced at higher velocities.Both the momery effect and motion control can play a positive role in extending the discharge lifetime.In addition,we have investigated the effects of environmental temperature,random noises,and quantum entanglement.These present results provides a feasible protocol for the open quantum battery.展开更多
基金supported by the Research Foundation of Sichuan Minzu College(Grant No.KYQD2402C)the National Natural Science Foundation of China(Grant No.11405100)the Natural Science Basic Research Plan in Shaanxi Province,China(Grant Nos.2019JM-332 and 2020JM-507)。
文摘A scheme for implementing quantum batteries in a realizable and controllable platform based on a trapped ion chain driven by a mechanical oscillator is proposed.The effects of the hopping interaction between the two-level ions and the coupling interaction between the ions and the external mechanical oscillator on the charging process of the battery are investigated.The importance of the counter-rotating wave terms in the system's Hamiltonian,which are often ignored,is analyzed,and it is found that the charging energy and the ergotropy of the battery are dramatically affected by the counterrotating wave terms.The quantum phase transition of the two-level system is restrained by the counter-rotating wave terms due to the destruction of the quantum coherence.Lastly,the power-law dependence of the charging process on the distance between the ions is discussed.Our theoretical analysis provides a solid foundation for the development of a practical quantum battery.
文摘As a potential alternative energy source in the quantum regime,a quantum battery inevitably experiences a process where the extracted work decreases due to the environmental decoherence.To inhibit the energy dissipation,we have put forward a scheme of a moving atom battery in a lossy cavity coupled to a structured environment.We investigate the dynamics of the maximally extracted work called the ergotropy by the open quantum system approach.It is found out that the decay of quantum work is significantly retarded in the non-Markovian environment.In contrast to the static case,the storage performance of the quantum battery is improved when the atom is in motion.The effect of energy preservation becomes more pronounced at higher velocities.Both the momery effect and motion control can play a positive role in extending the discharge lifetime.In addition,we have investigated the effects of environmental temperature,random noises,and quantum entanglement.These present results provides a feasible protocol for the open quantum battery.
