论文标题
不同能源制度中隧道时间的一般情况
A General Scenario of Tunneling Time in Different Energy Regimes
论文作者
论文摘要
从理论上讲，我们通过研究通过方屏障的玻色原子的波盒来研究隧道时间。我们发现，隧道时间在不同的能源制度中表现出不同的规模定律。对于波数据包的负入射能，违反直觉，随着入射速度的降低，隧道时间非常迅速。相比之下，对于小于屏障高度的正入射能，隧道时间缓慢增加，然后达到最大值，这与Larmor Clock实验一致。还解决了与不确定性原理有关的屏障宽度对最大隧道时间的影响。我们的工作提供了隧道时间的一般情况，可以用来理解和解释隧道时间上的争议。
We theoretically study the tunneling time by investigating a wave packet of Bose-condensed atoms passing through a square barrier. We find that the tunneling time exhibits different scaling laws in different energy regimes. For negative incident energy of the wave packet, counterintuitively, the tunneling time decreases very rapidly with decreasing incident velocity. In contrast, for positive incident energy smaller than the barrier height, the tunneling time increases slowly and then reaches a maximum, which is in agreement with the Larmor clock experiments. The effect of the barrier width related to the uncertainty principle on the maximum tunneling time is also addressed. Our work provides a general scenario of tunneling time that can be used to understand and explain the controversy over tunneling time.
