论文标题
Lipkin-Meshkov-Glick量子电池的充电优势
Charging advantages of Lipkin-Meshkov-Glick quantum battery
论文作者
论文摘要
我们根据对绝热性（STA）的快捷方式研究了Lipkin-Meshkov-Glick量子电池的性能。我们主要考虑量子电池中任何两个位点的耦合强度是时间相对于时间的正弦函数的情况。通过STA可以大大提高量子电池的充电效率。我们还分析了参数的影响，包括粒子数，各向异性参数，驱动场的幅度和频率。发现可以通过正确调整这些参数来实现有效的充电过程，因此可以实现高充电优势。此外，我们计算充电期间的能量波动，von Neumann熵和能量成本。 STA可以使存储的能量和冯·诺伊曼熵在充电过程中定期变化并减少能量波动，并且最小的能量波动始终发生在von Neumann熵的最小值附近。
We investigate the performance of the Lipkin-Meshkov-Glick quantum battery based on shortcuts to adiabaticity (STA). We mainly consider the situation where the coupling strength of any two sites in the quantum battery is a sinusoidal function with respect to time. The charging efficiency of the quantum battery can be greatly enhanced via STA. We also analyze the influences of parameters, including particle number, anisotropic parameter, the amplitude and frequency of the driving fields. It is found that an efficient charging process and thus high charging advantages can be achieved by adjusting these parameters properly. Moreover, we calculate the energy fluctuation, von Neumann entropy and energy cost during charging. The STA can make the stored energy and the von Neumann entropy change periodically during the charging process and reduce the energy fluctuation, and the minimal energy fluctuation always occurs in the proximity of minima of the von Neumann entropy.
