Controlled spontaneous emission

TL;DR

This paper uses computer simulations to study and control spontaneous emission by atoms, demonstrating that emission frequency and linewidth can be manipulated through multi-pulse sequences and atomic interactions.

Contribution

It introduces a discrete finite model for simulating spontaneous emission and demonstrates control over emission properties via pulse sequences and atom pairs.

Findings

Emission frequency can be tuned with phase kicks.

Linewidth of emission can be controlled.

Simulation results match exact solutions for specific parameters.

Abstract

The problem of spontaneous emission is studied by a direct computer simulation of the dynamics of a combined system: atom + radiation field. The parameters of the discrete finite model, including up to 20k field oscillators, have been optimized by a comparison with the exact solution for the case when the oscillators have equidistant frequencies and equal coupling constants. Simulation of the effect of multi-pulse sequence of phase kicks and emission by a pair of atoms shows that both the frequency and the linewidth of the emitted spectrum could be controlled.