Doppler-Enhanced Quantum Magnetometry with thermal Rydberg atoms
arXiv:2308.05190 · doi:10.1088/1367-2630/ad6179
Abstract
We report experimental measurements showing how one can combine quantum interference and thermal Doppler shifts at room temperature to detect weak magnetic fields. We pump Rb atoms to a highly-excited, Rydberg level using a probe and a coupling laser, leading to narrow transmission peaks of the probe due to destructive interference of transition amplitudes, known as Electromagnetically Induced Transparency (EIT). While it is customary in such setups to use counterpropagating lasers to minimize the effect of Doppler shifts, here we show, on the contrary, that one can harness Doppler shifts in a copropagating arrangement to produce an enhanced response to a magnetic field. In particular, we demonstrate an order-of-magnitude bigger splitting in the transmission spectrum as compared to the counterpropagating case. We explain and generalize our findings with theoretical modelling and simulations based on a Lindblad master equation. Our results pave the way to using quantum effects for magnetometry in readily deployable room-temperature platforms.
References in corpus (19)
- Quantum sensing
- Quantum information with Rydberg atoms
- Storage of light in atomic vapor
- Quantum trajectories and open many-body quantum systems
- Programmable quantum simulation of 2D antiferromagnets with hundreds of Rydberg atoms
- Coherent optical detection of highly excited Rydberg states using electromagnetically induced transparency
- ARC: An open-source library for calculating properties of alkali Rydberg atoms
- Rydberg atom quantum technologies
- A room temperature single-photon source based on strongly interacting Rydberg atoms
- A Photon-Photon Quantum Gate Based on Rydberg Interactions
- Improved Quantum Magnetometry beyond the Standard Quantum Limit
- Radiative lifetime measurements of rubidium Rydberg states
- Optimal Atomic Quantum Sensing using EIT Readout
- Optical coherences and wavelength mismatch in ladder systems
- Room temperature Rydberg Single Photon Source
- High-Precision Measurement of Rydberg State Hyperfine Splitting in a Room-Temperature Vapour Cell
- Measurements of spin properties of atomic systems in and out of equilibrium via noise spectroscopy
- Electromagnetically induced transparency with Rydberg atoms across the Breit-Rabi regime
- Transition frequency measurement of highly excited Rydberg states of 87Rb for a wide range of principal quantum numbers