Non-Markovian N-spin chain quantum battery in thermal charging process
Shun-Cai Zhao1, Zi-Ran Zhao1, Ni-Ya Zhuang1
1Kunming University of Science and Technology, Kunming University of Science and Technology, Center for Quantum Materials and Computational Condensed Matter Physics, Kunming 650500, People's Republic of China and School of Science, Department of Physics, Kunming 650093, People's Republic of China.
Physical Review. E
|September 16, 2025
Summary
We studied quantum battery performance using ergotropy dynamics in a non-Markovian system. Coordinated control suppresses oscillations, offering insights for practical quantum battery design.
Area of Science:
- Quantum physics
- Quantum thermodynamics
- Condensed matter physics
Background:
- Ergotropy is a key metric for quantum battery (QB) performance.
- Non-Markovian dynamics in quantum systems present unique challenges and opportunities.
Purpose of the Study:
- Investigate ergotropy dynamics in a non-Markovian quantum battery.
- Analyze methods to control and suppress ergotropy oscillations during thermal charging.
Main Methods:
- Utilized the Redfield master equation to model ergotropy dynamics.
- Simulated an N-spin chain quantum battery within a microcavity.
- Explored the effects of system and environmental parameters on ergotropy evolution.
Main Results:
- Observed distinct oscillatory behavior in thermal charging, unlike Markovian processes.
- Demonstrated effective suppression of these oscillations via coordinated tuning.
- Identified rich dynamical features influenced by various system parameters.
Conclusions:
- Coordinated control strategies can manage energy extraction in quantum batteries.
- Findings provide insights for designing practical quantum battery architectures.
- Understanding non-Markovian dynamics is crucial for optimizing QB performance.
Related Concept Videos
01:03Atomic Nuclei: Nuclear Spin State Overview
1.9K
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...
1.9K
01:14Atomic Nuclei: Nuclear Spin State Population Distribution
2.3K
Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
2.3K
01:23Atomic Nuclei: Nuclear Relaxation Processes
1.2K
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis, the precessing magnetic moments are randomly oriented around the z-axis.
1.2K
02:42Valence Bond Theory
11.2K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
11.2K
01:15Charging Conductors By Induction
9.0K
The Earth is a good conductor of electricity, and it is so big that it can be considered an infinite source or sink of charges. It can easily exchange charges with any matter.
Generally, conductors like metals do not allow any excess charge to be present on them. Any excess charge added to metals easily flows away, for example, when a metal is placed on the Earth. This process is called earthing.
However, conductors can be charged by a process called induction. For example, consider charging a...
Generally, conductors like metals do not allow any excess charge to be present on them. Any excess charge added to metals easily flows away, for example, when a metal is placed on the Earth. This process is called earthing.
However, conductors can be charged by a process called induction. For example, consider charging a...
9.0K
01:26Thermal and Photochemical Electrocyclic Reactions: Overview
3.0K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
3.0K