Spectroscopy of cesium Rydberg atoms in strong radio-frequency fields

Abstract

We study Rydberg atoms modulated by strong radio-frequency (RF) fields with a frequency of 70 MHz. The Rydberg atoms are prepared in a room temperature cesium cell, and their level structure is probed using electromagnetically induced transparency (EIT). As the RF field increases from the weak- into the strong-field regime, the range of observed RF-induced phenomena progresses from AC level shifts through increasingly pronounced and numerous RF-modulation sidebands to complex state-mixing and level-crossings with high-l hydrogen-like states. Weak anharmonic admixtures in the RF field generate clearly visible modifications in the Rydberg-EIT spectra. A Floquet analysis is employed to model the Rydberg spectra, and good agreement with the experimental observations is found. Our results show that all-optical spectroscopy of Rydberg atoms in vapor cells can serve as an antenna-free, atom-based and calibration-free technique to measure and map RF electric fields and to analyze their higher-harmonic contents.

6 pages, 5 figures

References in corpus (10)

• Broadband Rydberg Atom-Based Electric-Field Probe: From Self-Calibrated Measurements to Sub-Wavelength Imaging
• Sub-Wavelength Imaging and Field Mapping via EIT and Autler-Townes Splitting In Rydberg Atoms
• Millimeter Wave Detection via Autler-Townes Splitting in Rubidium Rydberg Atoms
• Giant electro-optic effect using polarizable dark states
• Sub-wavelength microwave electric field imaging using Rydberg atoms inside atomic vapor cells
• Optical measurements of strong microwave fields with Rydberg atoms in a vapor cell
• Simple microwave field imaging technique using hot atomic vapor cells
• Widefield Microwave Imaging in Alkali Vapor Cells with sub-100 um Resolution
• Imaging Microwave and DC Magnetic Fields in a Vapor-Cell Rb Atomic Clock
• Measurement and numerical calculation of Rubidium Rydberg Stark spectra

Cited by in corpus (14)

• Highly sensitive measurement of a megahertz rf electric field with a Rydberg-atom sensor
• Atom-based radio-frequency field calibration and polarization measurement using cesium $n{D}_J$ Floquet states
• Atom-based quantum receiver for amplitude- and frequency-modulated baseband signals in high-frequency radio communication
• Continuous-frequency measurements of high-intensity microwave electric fields with atomic vapor cells
• Improvement of response bandwidth and sensitivity of Rydberg Receiver using multi-channel excitations
• Single-photon cesium Rydberg excitation spectroscopy using 318.6-nm UV laser and room-temperature vapor cell
• Population trapping in a pair of periodically driven Rydberg atoms
• Detection of HF and VHF Fields through Floquet Sideband Gaps by `Rabi Matching' Dressed Rydberg Atoms
• Autler-Townes doublet in single-photon Rydberg spectra of Cesium atomic vapor with a 319 nm UV laser
• Continuous broadband Rydberg receiver using AC Stark shifts and Floquet States
• Coherent spin-phonon scattering in facilitated Rydberg lattices
• Optical pumping effects on the Rydberg EIT spectrum
• Velocity-selective spectroscopy measurements of Rydberg fine structure states in a hot vapor cell
• Optimizing the Rydberg EIT spectrum in a thermal vapor