Doppler-enhanced superheterodyne Rydberg microwave receiver

Abstract

We report the enhanced sensitivity of the Rydberg microwave (MW) receiver by exploiting the Doppler effect in a vapor cell. A two-photon Rydberg ladder scheme is implemented via the co-propagation of probe and coupling lasers, which enhances the Doppler effect. When an MW field is applied, microwave dressing modifies the velocity-dependent resonance condition, enabling stronger contributions from atoms with non-zero velocities and leading to an enhancement of the EIT transmission. Based on this mechanism, we achieve a sensitivity of $35.1\mathrm{nV}\mathrm{c}{\mathrm{m}}^{-1}\mathrm{H}{\mathrm{z}}^{-1/2}$ using the heterodyne technique, which is 1.5 times better than that obtained in the counter-propagating configuration. Meanwhile, the required local oscillator (LO) field is reduced by a factor of 17.6 compared with the counter-propagating configuration, which is advantageous for applications requiring minimal radiation and low power consumption. Moreover, the co-propagating configuration is more amenable to integration or portable sensing platforms because multiple laser fields can be delivered through a single optical fiber.

6pages, 3 figures

References in corpus (24)

• Coherent optical detection of highly excited Rydberg states using electromagnetically induced transparency
• Multimode quantum memory based on atomic frequency combs
• Quantum superhet based on microwave-dressed Rydberg atoms
• Atom Based Vector Microwave Electrometry Using Rubidium Rydberg Atoms in a Vapor Cell
• Real-Time Near-Field Terahertz Imaging with Atomic Optical Fluorescence
• Digital Communication with Rydberg Atoms & Amplitude-Modulated Microwave Fields
• Sub-Wavelength Imaging and Field Mapping via EIT and Autler-Townes Splitting In Rydberg Atoms
• An atomic receiver for AM and FM radio communication
• 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
• Ultra-high-speed Terahertz Imaging Using Atomic Vapour
• Microwave dressing of Rydberg dark states
• Microwave electrometry via electromagnetically induced absorption in cold Rydberg atoms
• Deep learning enhanced Rydberg multifrequency microwave recognition
• Radio-over-fiber using an optical antenna based on Rydberg states of atoms
• Atom-based quantum receiver for amplitude- and frequency-modulated baseband signals in high-frequency radio communication
• Evidence for strong van der Waals-type Rydberg-Rydberg interaction in thermal vapor
• Rydberg superatoms: An artificial quantum system for quantum information processing and quantum optics
• Emergence of synchronisation in a driven-dissipative hot Rydberg vapor
• Sensitivity Comparison of Two-photon vs Three-photon Rydberg Electrometry
• Self-induced transparency in warm and strongly interacting Rydberg gases
• Room Temperature Atomic Frequency Comb Memory for Light
• Optically-biased Rydberg microwave receiver enabled by hybrid nonlinear interferometry
• Thermal resonance-enhanced transparency in room temperature Rydberg gases