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Strongly interacting Rydberg slow light polaritons

Total Cost €


EC-Contrib. €






Project "SIRPOL" data sheet

The following table provides information about the project.


Organization address
postcode: 70174

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Project website
 Total cost 1˙505˙750 €
 EC max contribution 1˙505˙750 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2015-CoG
 Funding Scheme ERC-COG
 Starting year 2016
 Duration (year-month-day) from 2016-06-01   to  2021-05-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITAET STUTTGART DE (STUTTGART) coordinator 1˙505˙750.00


 Project objective

A fundamental property of optical photons is their extremely weak interactions, which can be ignored for all practical purposes and applications. This phenomena forms the basis for our understanding of light and is at the heart for the rich variety of tools available to manipulate and control optical beams. On the other hand, a controlled and strong interaction between individual photons would be ideal to generate non-classical states of light, prepare correlated quantum states of photons, and harvest quantum mechanics as a new resource for future technology. Rydberg slow light polaritons have recently emerged as a promising candidate towards this goal, and first experiments have demonstrated a strong interaction between individual photons. The aim of this project is to develop and advance the research field of Rydberg slow light polaritons with the ultimate goal to generate strongly interacting quantum many-body states with photons. The theoretical analysis is based on a microscopic description of the Rydberg polaritons in an atomic ensemble, and combines well established tools from condensed matter physics for solving quantum many-body systems, as well as the inclusion of dissipation in this non-equilibrium problem. The goals of the present project addresses questions on the optimal generation of non-classical states of light such as deterministic single photon sources and Schrödinger cat states of photons, as well as assess their potential for application in quantum information and quantum technology. In addition, we will shed light on the role of dissipation in this quantum many-body system, and analyze potential problems and fundamental limitations of Rydberg polaritons, as well as address questions on equilibration and non-equilibrium dynamics. A special focus will be on the generation of quantum many-body states of photons with topological properties, and explore novel applications of photonic states with topological properties.


year authors and title journal last update
List of publications.
2017 Asaf Paris-Mandoki, Christoph Braun, Jan Kumlin, Christoph Tresp, Ivan Mirgorodskiy, Florian Christaller, Hans Peter Büchler, Sebastian Hofferberth
Free-Space Quantum Electrodynamics with a Single Rydberg Superatom
published pages: , ISSN: 2160-3308, DOI: 10.1103/physrevx.7.041010
Physical Review X 7/4 2019-06-18
2016 Krzysztof Jachymski, Przemysław Bienias, Hans Peter Büchler
Three-Body Interaction of Rydberg Slow-Light Polaritons
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.117.053601
Physical Review Letters 117/5 2019-06-18
2017 K. Guther, N. Lang, H. P. Büchler
Ising anyonic topological phase of interacting fermions in one dimension
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.96.121109
Physical Review B 96/12 2019-06-18
2018 Nina Stiesdal, Jan Kumlin, Kevin Kleinbeck, Philipp Lunt, Christoph Braun, Asaf Paris-Mandoki, Christoph Tresp, Hans Peter Büchler, Sebastian Hofferberth
Observation of Three-Body Correlations for Photons Coupled to a Rydberg Superatom
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.121.103601
Physical Review Letters 121/10 2019-05-27
2018 Jan Kumlin, Sebastian Hofferberth, Hans Peter Büchler
Emergent Universal Dynamics for an Atomic Cloud Coupled to an Optical Waveguide
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.121.013601
Physical Review Letters 121/1 2019-05-27
2018 Sebastian Weber, Sylvain de Léséleuc, Vincent Lienhard, Daniel Barredo, Thierry Lahaye, Antoine Browaeys, Hans Peter Büchler
Topologically protected edge states in small Rydberg systems
published pages: 44001, ISSN: 2058-9565, DOI: 10.1088/2058-9565/aaca47
Quantum Science and Technology 3/4 2019-05-27

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