Hadipour Maryam, Yousefi Negar Nikdel, Mortezapour Ali, Miavaghi Amir Sharifi, Haseli Soroush
Faculty of Physics, Urmia University of Technology, Urmia, Iran.
Quantum Technologies Research Center (QTRC), Science and Research Branch, Islamic Azad University, Tehran, Iran.
Sci Rep. 2025 Apr 25;15(1):14578. doi: 10.1038/s41598-025-99291-3.
We investigate the charging dynamics of a frequency-modulated quantum battery (QB) placed within a dissipative cavity environment. Our study focuses on the interaction of such a battery under both weak and strong coupling regimes, employing a model in which the quantum battery and charger are represented as frequency-modulated qubits indirectly coupled through a zero-temperature environment. It is demonstrated that both the modulation frequency and amplitude are crucial for optimizing the charging process and the ergotropy of the quantum battery. Specifically, high-amplitude, low-frequency modulation significantly enhances charging performance and work extraction in the strong coupling regime. As an intriguing result, it is deduced that modulation at very low frequencies leads to the emergence of energy storage and work extraction in the weak coupling regime. Such a result can never be achieved without modulation in the weak coupling regime. These results highlight the importance of adjusting modulation parameters to optimize the performance of quantum batteries for real-world applications in quantum technologies.
我们研究了置于耗散腔环境中的调频量子电池（QB）的充电动力学。我们的研究聚焦于这种电池在弱耦合和强耦合 regimes 下的相互作用，采用一种模型，其中量子电池和充电器被表示为通过零温度环境间接耦合的调频量子比特。结果表明，调制频率和幅度对于优化量子电池的充电过程和熵至关重要。具体而言，高幅度、低频调制在强耦合 regime 中显著提高充电性能和功提取。作为一个有趣的结果，推断出在非常低的频率下调制会导致在弱耦合 regime 中出现能量存储和功提取。在弱耦合 regime 中没有调制就永远无法实现这样的结果。这些结果凸显了调整调制参数对于在量子技术的实际应用中优化量子电池性能的重要性。
