量子隧穿中的选择性提升
Selected elevation in quantum tunneling
摘要：
研究了具有强振荡分量的不透明势垒的隧穿。结果表明，在强扰动区（与弱扰动区相反），较高的扰动率并不一定改善激活。事实上，在这种情况下，两个相互竞争的因素起作用，因此，这个隧穿系统表现得像一个敏感的频移装置：对于大多数入射粒子的能量，发生激活，粒子的能量被提升，而对于特定的能量，激活被抑制，透射率非常低。这种效应是唯一的强扰动制度，它是完全没有在弱扰动的情况下。此外，即使在绝热状态下也不能推导出它。据证实，这种机制可以用作频率依赖型晶体管，其中器件的传输由外场频率决定。
英文摘要：
The tunneling through an opaque barrier with a strong oscillating component is investigated. It is shown, that in the strong perturbations regime (in contrast to the weak one), higher perturbations rate does not necessarily improve the activation. In fact, in this regime two rival factors play a role, and as a consequence, this tunneling system behaves like a sensitive frequency-shifter device: for most incident particles' energies activation occurs and the particles are energetically elevated, while for specific energies activation is depressed and the transmission is very low. This effect is unique to the strong perturbation regime, and it is totally absent in the weak perturbation case. Moreover, it cannot be deduced even in the adiabatic regime. It is conjectured that this mechanism can be used as a frequency-dependent transistor, in which the device's transmission is governed by the external field frequency.
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