Non-classical effects in wave packet dynamics

TL;DR

This paper investigates non-classical effects like revivals, squeezing, and entanglement in wave packet dynamics within nonlinear media, highlighting how deviations from coherence influence quantum behavior over time.

Contribution

It introduces a detailed analysis of non-classical phenomena in wave packets and explores the role of quantum entanglement in bipartite systems during propagation.

Findings

Identification of conditions for wave packet revivals and fractional revivals.

Observation of squeezing and higher-order squeezing effects.

Insights into chaotic spreading of wave packets.

Abstract

Treating the ideal coherent state as a reference state, the effects due to departure from coherence of an initial wave packet propagating through a nonlinear medium, were examined, specifically in the context of non-classical effects such as revivals, fractional revivals, squeezing and higher-order squeezing during its temporal evolution. Further, these studies were extended to examine the role of quantum entanglement in bipartite systems. The dynamics of quantum expectation values were tracked carefully in various cases and the conditions under which a wave packet spreads chaotically, were investigated.