Dressed-state electromagnetically induced transparency for light storage in uniform phase spin-waves

Abstract

We present, experimentally and theoretically, a scheme for dressed-state electromagnetically induced transparency (EIT) in a three-step cascade system where a four-level system is mapped into an effective three-level system. Theoretical analysis reveals that the scheme provides coherent state control via adiabatic following and provides a generalized protocol for light storage in uniform phase spin-waves that are insensitive to motional dephasing. The three-step driving enables a number of other features including spatial selectivity of the excitation region within the atomic medium, and kick-free and Doppler-free excitation that produces narrow resonances in thermal vapor. As a proof of concept we present an experimental demonstration of the generalized EIT scheme using the $6S_{1/2}\to 6P_{3/2}\to 7S_{1/2}\to 8P_{1/2}$ excitation path in thermal cesium vapor. This technique could be applied to cold and thermal ensembles to enable longer storage times for Rydberg polaritons.

6 pages, 5 figures

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• Satellite radio detection via dual-microwave Rydberg spectroscopy
• Self-induced transparency in warm and strongly interacting Rydberg gases
• Stable high-dimensional weak-light soliton molecules and their active control
• A practical guide to Terahertz imaging using thermal atomic vapour
• Switchable dynamic Rydberg-dressed excitation via a cascaded double electromagnetically induced transparency
• Doppler sensitivity and resonant tuning of Rydberg atom-based antennas
• Electromagnetically induced transparency and absorption cross-over with a four-level Rydberg system
• Pulsed-pump phosphorus-doped fiber Raman amplifier around 1260 nm for applications in quantum non-linear optics
• Doppler-free Rydberg Spectroscopy in Warm Vapor