Alexander Poddubny Group

Quantum light-matter interaction theory
besides physics, I like swimming and honey badgers

Research

In recent years, the quantum physics landscape has been reshaped by the emergence of diverse artificial quantum optical systems. In these systems, photons interact with multiple emitters—be it atoms, superconducting qubits, solid-state defects, or quantum dots. An intriguing aspect of these interactions is the reabsorption of emitted photons by remote emitters, initiating a photon-mediated coupling across significant distances. This long-range, collective coupling introduces unique properties to atom-photon systems.

 

We study theoretically various phenomena found within arrays of photon emitters, including both natural and artificial atoms, lasers, and particularly within topologically complex lattices. Our main setup is an array of emitters coupled to waveguide as in the video above. Our mission is two-fold: to advance the fundamental understanding of intricate quantum systems from the perspectives of quantum optics, nonlinear and many-body physics, and to provide a solid theoretical foundation for the development of emerging quantum technologies. We actively collaborate with experimental groups both at Weizmann and across the globe.

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News

February 18, 2025

New preprint on warped polariton vortices!

February 5, 2025

Paper with Yuval Mualem now published online in Physica Scripta

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Latest Publications

Van der Waals interactions in linear chains with long-range correlated disorder

Mualem Y. & Poddubny A. N. (2025) Physica Scripta. 100, 3, 035526.

Multimer states in multilevel waveguide QED

Shi J. & Poddubny A. N. (2024) Physical Review A. 110, 5, 053707.

How Single-Photon Switching is Quenched with Multiple Λ -Level Atoms

Poddubny A. N., Rosenblum S. & Dayan B. (2024) Physical Review Letters. 133, 11, 113601.
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