Quantum interference of Rydberg excitons in Cu$_2$0: quantum beats

TL;DR

This paper uses a density matrix approach to study quantum beats in Rydberg excitons in Cu$_2$O, revealing coherent dynamics and effects like Rydberg blockade, with comparisons to recent experiments.

Contribution

It introduces a detailed theoretical model for quantum interference effects in Rydberg excitons, including the impact of Rydberg blockade, aligning with experimental observations.

Findings

Identification of picosecond-scale quantum beats.

Demonstration of Rydberg blockade effects on quantum coherence.

Agreement with recent experimental data.

Abstract

A density matrix formalism is employed to calculate the emission of multi-level excitonic system, highlighting picosecond-scale dynamics and coherent effects such as quantum beats. The results are compared with recent experimental results and indicate some directions of further study. In particular, the effect of Rydberg blockade on the quantum beat phenomenon is discussed.