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arXiv · 1710.05573

Rydberg interaction induced enhanced excitation in thermal atomic vapor

Dushmanta Kara·Arup Bhowmick·Ashok K. Mohapatra
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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.

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Dushmanta Kara, Arup Bhowmick, Ashok K. Mohapatra. 2017-10-16. Rydberg interaction induced enhanced excitation in thermal atomic vapor. https://arxiv.org/abs/1710.05573

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