Electromagnetically-induced transparency, absorption, and microwave field sensing in a Rb vapor cell with a three-color all-infrared laser system

Abstract

A comprehensive study of three-photon electromagnetically-induced transparency (EIT) and absorption (EIA) on the rubidium cascade $5S_{1/2}\to 5P_{3/2}$ (laser wavelength 780~nm), $5P_{3/2}\to 5D_{5/2}$ (776~nm), and $5D_{5/2}\to 28F_{7/2}$ (1260~nm) is performed. The 780-nm probe and 776-nm dressing beams are counter-aligned through a Rb room-temperature vapor cell, and the 1260-nm coupler beam is co- or counter-aligned with the probe beam. Several cases of EIT and EIA, measured over a range of detunings of the 776-nm beam, are studied. The observed phenomena are modeled by numerically solving the Lindblad equation, and the results are interpreted in terms of the probe-beam absorption behavior of velocity- and detuning-dependent dressed states. To explore the utility of three-photon Rydberg EIA/EIT for microwave electric-field diagnostics, a sub-THz field generated by a signal source and a frequency quadrupler is applied to the Rb cell. The 100.633-GHz field resonantly drives the $28F_{7/2}\leftrightarrow 29D_{5/2}$ transition and causes Autler-Townes splittings in the Rydberg EIA/EIT spectra, which are measured and employed to characterize the performance of the microwave quadrupler.

References in corpus (20)

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• Spectroscopy of strontium Rydberg states using electromagnetically induced transparency
• Frequency-Tunable Microwave Field Detection in an Atomic Vapor Cell
• Continuous-frequency measurements of high-intensity microwave electric fields with atomic vapor cells
• Absolute frequency measurements of 85Rb nF7/2 Rydberg states using purely optical detection

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• Measurement of Rb g-series quantum defect using two-photon microwave spectroscopy
• Investigation of fluorescence versus transmission readout for three-photon Rydberg excitation used in electrometry
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• A Rydberg atom based system for benchmarking mmWave automotive radar chips
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• Telecom-wavelength spectra of a Rydberg state in a hot vapor
• Doppler sensitivity and resonant tuning of Rydberg atom-based antennas
• Effects of inert background gases and photo-illumination on three-color electromagnetically induced transparency of rubidium vapor
• Spectroscopy of the ${}^{85}$Rb 4$D_{3/2}$ state for hyperfine-structure determination
• Electromagnetically induced transparency and absorption cross-over with a four-level Rydberg system
• Dynamic polarizability of the ${}^{85}$Rb $5D_{3/2}$-state in 1064 nm light
• Hyperfine structure and collisions in three-photon Rydberg electromagnetically induced transparency
• Fisher information analysis on quantum-enhanced parameter estimation in electromagnetically-induced-transparency spectrum with single photons
• Gauge effects in bound-bound Rydberg-transition matrix elements
• Doppler-free Rydberg Spectroscopy in Warm Vapor
• Modulation transfer protocol for Rydberg RF receivers
• Voltage and power-frequency electric field measurements with Rydberg-atom interferometry