论文标题
通过基于同源的反馈控制，开放旋转链量子电池的最佳充电
Optimal charging of open spin-chain quantum batteries via homodyne-based feedback control
论文作者
论文摘要
我们研究了在旋转衰减的情况下，使用局部磁场为耗散一维$ xxx $ spin链量子电池充电的问题。基于同源性测量的量子反馈控制引入有助于提高量子电池的各种性能，例如储能，麦角拷贝和有效的空间利用率。对于零温度环境，有一组最佳参数，以确保可以在完美的测量条件下充分充电旋转链量子电池，并且可以完全提取存储在电池中的能量，这可以通过分析计算，通过分析计算简单的两次旋转智量电池，并通过数值模拟四个固定式旋转式副标准。为了完整，还考虑了量子电池充电过程中不完美测量，各向异性参数和有限温度的不利影响。
We study the problem of charging a dissipative one-dimensional $XXX$ spin-chain quantum battery using local magnetic fields in the presence of spin decay. The introduction of quantum feedback control based on homodyne measurement contributes to improve various performance of the quantum battery, such as energy storage, ergotropy, and effective space utilization rate. For the zero temperature environment, there is a set of optimal parameters to ensure that the spin-chain quantum battery can be fully charged and the energy stored in the battery can be fully extracted under the perfect measurement condition, which is found through the analytical calculation of a simple two-site spin-chain quantum battery and further verified by numerical simulation of a four-site spin-chain counterpart. For completeness, the adverse effects of imperfect measurement, anisotropic parameter, and finite temperature on the charging process of the quantum battery are also considered.
