Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 48: Poster – Quantum Optics, Technologies, and Optomechanics
Q 48.45: Poster
Mittwoch, 12. März 2025, 17:00–19:00, Tent
Towards quantum mirrors based on 2D subwavelength atomic arrays — •Julian Lyne1,2, Nico Baßler2,1, Kai Phillip Schmidt2, and Claudiu Genes1,2 — 1Max Planck Institute for the Science of Light, Staudtstraße 2, D-91058 Erlangen, Germany — 2Department of Physics, Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Staudtstraße 7, D-91058 Erlangen, Germany
Two-dimensional subwavelength arrays of quantum emitters have been shown to exhibit interesting optical properties, enabling perfect reflection of an incoming field as well as control over its polarization, phase, and helicity [1,2]. While such properties are already fully described by classical coupled dipole models, for incident fields of increased intensities, the quantum nature of the quantum emitters comes into play, as double excitation of an individual emitter is not possible. We investigate such regimes where the two-dimensional array can induce photon-photon interactions owing to the effective hardcore interaction. To this aim, we tailor the dipolar interaction as recently proposed in Ref. [3]. The manipulation of the emitters' dipole orientation and/or relative emitter-emitter separation allows for the confinement of excitations towards the center of the array and thus enhance photon-photon interactions. We show here the operation of such an array within the double excitation manifold.
[1] E. Shahmoon et al., Physical Review Letters 118, (2017).
[2] N. S. Baßler et al., Optics Express 31, 6003 (2023).
[3] M. Cech, I. Lesanovsky, and B. Olmos, Physical Review A 108, (2023).
Keywords: atomic arrays; open quantum systems; cooperative quantum phenomena