Stimulated Raman adiabatic passage in a $\Lambda$-system in the presence of quantum noise

TL;DR

This paper presents a microscopic master equation approach to analyze STIRAP in a $\\Lambda$-system with quantum noise, showing higher efficiency predictions and the impact of temperature on population transfer.

Contribution

It introduces a microscopic model for STIRAP under quantum noise, improving accuracy over previous phenomenological models and revealing thermal effects on efficiency.

Findings

Microscopic model predicts higher STIRAP efficiency.

Thermal pumping can enhance population transfer.

Comparison shows significant differences from phenomenological predictions.

Abstract

We exploit a microscopically derived master equation for the study of STIRAP in the presence of decay from the auxiliary level toward the initial and final state, and compare our results with the predictions obtained from a phenomenological model previously used [P. A. Ivanov, N. V. Vitanov, and K. Bergmann, Phys. Rev. A 72, 053412 (2005)]. It is shown that our approach predicts a much higher efficiency. The effects of temperature are also taken into account, proving that in b-STIRAP thermal pumping can increase the efficiency of the population transfer.