Enhancement of electromagnetically induced transparency based Rydberg-atom electrometry through population repumping

Abstract

We demonstrate improved sensitivity of Rydberg electrometry based on electromagnetically induced transparency (EIT) with a ground state repumping laser. Though there are many factors that limit the sensitivity of radio frequency field measurements, we show that repumping can enhance the interaction strength while avoiding additional Doppler or power broadening. Through this method, we nearly double the EIT amplitude without an increase in the width of the peak. A similar increase in amplitude without the repumping field is not possible through simple optimization.We also establish that one of the key limits to detection is the photon shot noise of the probe laser. We show an improvement on the sensitivity of the device by a factor of nearly 2 in the presence of the repump field.

arXiv comment5 pages, 6 figures

References in corpus (20)

• Quantum superhet based on microwave-dressed Rydberg atoms
• Broadband Rydberg Atom-Based Electric-Field Probe: From Self-Calibrated Measurements to Sub-Wavelength Imaging
• Real-Time Near-Field Terahertz Imaging with Atomic Optical Fluorescence
• Waveguide-coupled Rydberg spectrum analyzer from 0 to 20 GHz
• An atomic receiver for AM and FM radio communication
• Determining the Angle-of-Arrival of an Radio-Frequency Source with a Rydberg Atom-Based Sensor
• The credibility of Rydberg atom based digital communication over a continuously tunable radio-frequency carrier
• Detecting and Receiving Phase Modulated Signals with a Rydberg Atom-Based Mixer
• Optical measurements of strong microwave fields with Rydberg atoms in a vapor cell
• Vapor-cell-based atomic electrometry for detection frequencies below kHz
• A Multiple-Band Rydberg-Atom Based Receiver/Antenna: AM/FM Stereo Reception
• A New Quantum-Based Power Standard: Using Rydberg Atoms for a SI-Traceable Radio-Frequency Power Measurement Technique in Rectangular Waveguides
• Enhancement of Rydberg atom interactions using ac Stark shifts
• Simultaneous Use of Cs and Rb Rydberg Atoms for Independent RF Electric Field Measurements via Electromagnetically Induced Transparency
• Data capacity scaling of a distributed Rydberg atomic receiver array
• Continuous-frequency measurements of high-intensity microwave electric fields with atomic vapor cells
• Quantum Blackbody Thermometry
• Quantum-Enhanced Two-Photon Spectroscopy Using Two-mode Squeezed Light
• Comparison of collimated blue light generation in ${}^{85}$Rb atoms via the D${}_1$ and D${}_2$ lines
• Polarization-Based Truncated SU(1,1) Interferometer based on Four-wave Mixing in Rb vapor