Phase evolution of superposition target states in adiabatic population transfer

TL;DR

This paper investigates how the phase of a superposition state evolves during adiabatic population transfer in a four-state system, revealing dependencies on pulse parameters relevant for symmetry violation experiments.

Contribution

It introduces a detailed analysis of phase evolution in superposition states during STIRAP with a four-state system, highlighting pulse parameter effects.

Findings

Final superposition phase depends on pulse amplitude, width, and timing.

Results are applicable to experiments measuring symmetry violations.

Provides insights into controlling superposition phases in quantum systems.

Abstract

We consider stimulated Raman adiabatic passage (STIRAP) when the final state is a superposition of two non-degenerate states. The system consists of four states coupled by two light fields. We find the relative phase of the final superposition depends on relative amplitude, width and timing of the adiabatic transfer pulses. We discuss these results in the context of experiments measuring symmetry violation in atomic and molecular systems.