Rydberg interaction induced enhanced excitation in thermal atomic vapor
Abstract
We present the experimental demonstration of interaction induced enhancement in Rydberg excitation or Rydberg anti-blockade in thermal atomic vapor. We have used optical heterodyne detection technique to measure Rydberg population due to two-photon excitation to the Rydberg state. The anti-blockade peak which doesn't satisfy the two-photon resonant condition is observed along with the usual two-photon resonant peak which can't be explained using the model with non-interacting three-level atomic system. A model involving two interacting atoms is formulated for thermal atomic vapor using the dressed states of three-level atomic system to explain the experimental observations. A non-linear dependence of vapor density is observed for the anti-blockade peak which also increases with increase in principal quantum number of the Rydberg state. A good agreement is found between the experimental observations and the proposed interacting model. Our result implies possible applications towards quantum logic gates using Rydberg anti-blockade in thermal atomic vapor.
Keywords
Cite
@article{arxiv.1710.05573,
title = {Rydberg interaction induced enhanced excitation in thermal atomic vapor},
author = {Dushmanta Kara and Arup Bhowmick and Ashok K. Mohapatra},
journal= {arXiv preprint arXiv:1710.05573},
year = {2017}
}