论文标题
使用反馈控制冷却经典的多旋转系统
Cooling classical many-spin systems using feedback control
论文作者
论文摘要
我们提出了一种使用反馈控制的技术，用于两极化和冷却有限的多体经典系统。该技术要求系统具有内部动力学保留的一个集体自由度。然后将其他自由度的波动转化为保守的自由度的生长。在代表核磁共振实验的设置中，使用经典自旋系统的数值模拟来验证该提案。特别是，我们能够从1000个经典旋转的晶格中实现90％的极化，从不偏振的无限温度状态开始。
We propose a technique for polarizing and cooling finite many-body classical systems using feedback control. The technique requires the system to have one collective degree of freedom conserved by the internal dynamics. The fluctuations of other degrees of freedom are then converted into the growth of the conserved one. The proposal is validated using numerical simulations of classical spin systems in a setting representative of Nuclear Magnetic Resonance experiments. In particular, we were able to achieve 90 percent polarization for a lattice of 1000 classical spins starting from an unpolarized infinite temperature state.
