通过自适应信号控制隧道
Control of tunneling by adapted signals
摘要：
在各种物理系统中，即使是微弱的、时变缓慢的电磁信号，只要使其形状与特定系统相适应，就可以有效地控制粒子的量子隧穿过程。在粒子的势垒下运动期间，这样的信号通过多量子吸收提供隧穿的“相干”辅助，导致隧穿概率的强烈增强。发展了基于复时间轨迹的半经典方法来研究非平稳场中的隧穿。当信号的奇异性与粒子的经典牛顿轨迹的奇异性在复时间平面上的位置重合时，发生隧穿增强。所发展的理论也适用于粒子的过势垒反射和经典波（电磁波、流体动力波等）的反射。从一个空间平滑的介质。
英文摘要：
Process of quantum tunneling of particles in various physical systems can be effectively controlled even by a weak and slow varying in time electromagnetic signal if to adapt specially its shape to a particular system. During an under-barrier motion of a particle such signal provides a "coherent" assistance of tunneling by the multi-quanta absorption resulting in a strong enhancement of the tunneling probability. The semiclassical approach based on trajectories in the complex time is developed for tunneling in a non-stationary field. Enhancement of tunneling occurs when a singularity of the signal coincides in position at the complex time plane with a singularity of the classical Newtonian trajectory of the particle. The developed theory is also applicable to the over-barrier reflection of particles and to reflection of classical waves (electromagnetic, hydrodynamic, etc.) from a spatially-smooth medium.
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