Interference effects in tunnelling of "cat" wave packet states

TL;DR

This paper investigates how superposed wave packet states affect tunnelling probabilities and interference effects, providing insights into scattering times and the behavior of identical particles in quantum tunnelling.

Contribution

It introduces a detailed analysis of interference effects in tunnelling of superposed wave packets, revealing how these effects can probe barrier scattering times.

Findings

Superposition of wave packets alters tunnelling probabilities.

Interference effects are significant in resonance tunnelling.

Insights into scattering times for identical particles.

Abstract

We analyse tunnelling of a single particle, whose initial state is given by a superposition of spatially separated wave packet modes. It is shown that "pile up" of different components the scatterer may change the tunnelling probabilities, making such states a convenient tool for probing the barrier's scattering times. Interference effects arising in resonance tunnelling in are studied in detail. The analysis allows us to gain further insight into the origin of interference effects in scattering of several identical particles.