A subradiant optical mirror formed by a single structured atomic layer

Nature
Jun RuiImmanuel Bloch

Abstract

Versatile interfaces with strong and tunable light-matter interactions are essential for quantum science1 because they enable mapping of quantum properties between light and matter1. Recent studies2-10 have proposed a method of controlling light-matter interactions using the rich interplay of photon-mediated dipole-dipole interactions in structured subwavelength arrays of quantum emitters. However, a key aspect of this approach-the cooperative enhancement of the light-matter coupling strength and the directional mirror reflection of the incoming light using an array of quantum emitters-has not yet been experimentally demonstrated. Here we report the direct observation of the cooperative subradiant response of a two-dimensional square array of atoms in an optical lattice. We observe a spectral narrowing of the collective atomic response well below the quantum-limited decay of individual atoms into free space. Through spatially resolved spectroscopic measurements, we show that the array acts as an efficient mirror formed by a single monolayer of a few hundred atoms. By tuning the atom density in the array and changing the ordering of the particles, we are able to control the cooperative response of the array and elucidate the eff...Continue Reading

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Citations

Aug 28, 2020·Physical Review Letters·K E Ballantine, J Ruostekoski
Aug 29, 2020·Physical Review Letters·L A WilliamsonJ Ruostekoski
Aug 29, 2020·Physical Review Letters·A CidrimR Bachelard
Aug 28, 2020·Physical Review Letters·Rasoul AlaeeVahid Sandoghdar
Jan 16, 2021·Physical Review Letters·Stuart J MassonAna Asenjo-Garcia
Dec 5, 2020·Physical Review Letters·Yizun HeDarrick E Chang
Mar 31, 2021·Physical Review Letters·A CiprisR Bachelard
May 15, 2021·Physical Review Letters·Stefan RichterFerdinand Schmidt-Kaler
May 15, 2021·Physical Review Letters·Timo FelserSimone Montangero
Jun 22, 2021·Physical Review Letters·Taylor L PattiSusanne F Yelin
Aug 7, 2021·Physical Review Letters·Vindhiya PrakashMorgan W Mitchell
Aug 7, 2021·Physical Review Letters·Wilton J M Kort-KampDiego A R Dalvit
Aug 31, 2021·Physical Review Letters·Athreya ShankarMurray J Holland

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