Resonance Retrieval of Stored Coherence in a Radiofrequency-optical Double Resonance Experiment

TL;DR

This paper investigates how atomic coherences stored in rubidium vapor can be retrieved using optical pulses, revealing that the retrieved signal's frequency is linked to the atomic ground states' Raman transition.

Contribution

It demonstrates a method for resonance retrieval of stored atomic coherence in a double resonance setup, connecting optical signals to atomic ground state transitions.

Findings

Stored atomic coherence can be effectively retrieved using optical pulses.

The retrieved optical signal's frequency matches the atomic ground states' Raman transition.

The experiment confirms the coherence storage and retrieval mechanism in rubidium vapor.

Abstract

We study the storage of coherences in atomic rubidium vapor with a three-level coupling scheme with two ground states and one electronically excited state driven by one optical (control) and one radiofrequency field. We initially store an atomic ground state coherence in the system. When retrieving the atomic coherence with a subsequent optical pulse, a second (signal) optical beam is created whose difference frequency to the control field is found to be determined by the atomic ground states Raman transition frequency.