论文标题
通过Terahertz量子淬火在螺旋边缘状态下，耗散热点引起了冲击和弹跳动力学
Dissipative Hot-spot Enabled Shock and Bounce Dynamics via Terahertz Quantum Quenches in Helical Edge States
论文作者
论文摘要
我们研究带有弹性弹性散射的螺旋液体的量子淬火。可以通过在2D拓扑绝缘子上施加的超短电脉冲来创建螺旋边缘中的反向电荷数据包。由于散射而形成的局部“热点”可以实现两种类型的强非线性波动力学。首先，传播数据包会产生自我关注的冲击战线。其次，尽管耗散巨大，但带有相反电荷的碰撞数据包仍会表现出几乎完美的反射反射。这导致频率加倍，可以从发射的Terahertz辐射中实验检测到。
We study quantum quenches of helical liquids with spin-flip inelastic scattering. Counterpropagating charge packets in helical edges can be created by an ultrashort electric pulse applied across a 2D topological insulator. Localized "hot spots" that form due to scattering enable two types of strongly nonlinear wave dynamics. First, propagating packets develop self-focusing shock fronts. Second, colliding packets with opposite charge can exhibit near-perfect retroreflection, despite strong dissipation. This leads to frequency doubling that could be detected experimentally from emitted terahertz radiation.
