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arXiv · 2311.16365

Avalanche terahertz photon detection in a Rydberg tweezer array

Chris Nill·Albert Cabot·Arno Trautmann·Christian Groß·Igor Lesanovsky
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Abstract

We propose a protocol for the amplified detection of low-intensity terahertz radiation using Rydberg tweezer arrays. The protocol offers single photon sensitivity together with a low dark count rate. It is split into two phases: during a sensing phase, it harnesses strong terahertz-range transitions between highly excited Rydberg states to capture individual terahertz photons. During an amplification phase it exploits the Rydberg facilitation mechanism which converts a single terahertz photon into a substantial signal of Rydberg excitations. We discuss a concrete realization based on realistic atomic interaction parameters, develop a comprehensive theoretical model that incorporates the motion of trapped atoms and study the many-body dynamics using tensor network methods.

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Chris Nill, Albert Cabot, Arno Trautmann, Christian Groß, Igor Lesanovsky. 2023-11-27. Avalanche terahertz photon detection in a Rydberg tweezer array. https://doi.org/10.1103/physrevlett.133.073603

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