Fast and Accurate Method for Doppler Averaging of Rydberg EIT Signals

Fuente: arXiv
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Auteurs principaux: Nagib, Omar, Walker, Thad G.
Format: Preprint
Publié: 2025
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author Nagib, Omar
Walker, Thad G.
author_facet Nagib, Omar
Walker, Thad G.
contents Modeling the effect of Doppler broadening due to the thermal atomic motion of Rydberg sensors typically relies on sampling a large velocity class, solving the equations of motion for each velocity, and then averaging the atomic density matrix over that velocity class. This process is inexact, slow, and presents a bottleneck in simulating Rydberg sensors. We present an approach that allows for fast, exact velocity averaging just by solving the equations of motion twice. We find the "propagator" that acts on the zero-velocity solution to generate the velocity-dependent atomic state for all velocities. By averaging this propagator over the Maxwell-Boltzmann velocity distribution of the atoms, we obtain an explicit, analytic formula that generates the averaged atomic state. This method is expected to save memory and time computational resources by one to several orders of magnitude, compared to traditional sampling approaches.
format Preprint
id arxiv_https___arxiv_org_abs_2501_02141
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Fast and Accurate Method for Doppler Averaging of Rydberg EIT Signals
Nagib, Omar
Walker, Thad G.
Quantum Physics
Modeling the effect of Doppler broadening due to the thermal atomic motion of Rydberg sensors typically relies on sampling a large velocity class, solving the equations of motion for each velocity, and then averaging the atomic density matrix over that velocity class. This process is inexact, slow, and presents a bottleneck in simulating Rydberg sensors. We present an approach that allows for fast, exact velocity averaging just by solving the equations of motion twice. We find the "propagator" that acts on the zero-velocity solution to generate the velocity-dependent atomic state for all velocities. By averaging this propagator over the Maxwell-Boltzmann velocity distribution of the atoms, we obtain an explicit, analytic formula that generates the averaged atomic state. This method is expected to save memory and time computational resources by one to several orders of magnitude, compared to traditional sampling approaches.
title Fast and Accurate Method for Doppler Averaging of Rydberg EIT Signals
topic Quantum Physics
url https://arxiv.org/abs/2501.02141