A new time-frequency method to reveal quantum dynamics of atomic hydrogen in intense laser pulses: Synchrosqueezing transform

Yae Lin Sheu, Liang Yan Hsu, Hau Tieng Wu, Peng Cheng Li, Shih I. Chu

Research output: Contribution to journalArticlepeer-review

Abstract

This study introduces a new adaptive time-frequency (TF) analysis technique, the synchrosqueezing transform (SST), to explore the dynamics of a laser-driven hydrogen atom at an ab initio level, upon which we have demonstrated its versatility as a new viable venue for further exploring quantum dynamics. For a signal composed of oscillatory components which can be characterized by instantaneous frequency, the SST enables rendering the decomposed signal based on the phase information inherited in the linear TF representation with mathematical support. Compared with the classical type of TF methods, the SST clearly depicts several intrinsic quantum dynamical processes such as selection rules, AC Stark effects, and high harmonic generation.

Original languageEnglish (US)
Article number117138
JournalAIP Advances
Volume4
Issue number11
DOIs
StatePublished - Nov 1 2014

ASJC Scopus subject areas

  • General Physics and Astronomy

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