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Frontiers of Quantum Atom-Light Interactions

Total Cost €


EC-Contrib. €






Project "FoQAL" data sheet

The following table provides information about the project.


Organization address
city: Castelldefels
postcode: 8860

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 Spain [ES]
 Total cost 1˙340˙873 €
 EC max contribution 1˙340˙873 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2014-STG
 Funding Scheme ERC-STG
 Starting year 2015
 Duration (year-month-day) from 2015-03-01   to  2020-02-29


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    FUNDACIO INSTITUT DE CIENCIES FOTONIQUES ES (Castelldefels) coordinator 1˙340˙873.00


 Project objective

FoQAL aims to completely re-define our ability to control light-matter interactions at the quantum level. This potential revolution will make use of cold atoms interfaced with nanophotonic systems, exploiting unique features such as control over the dimensionality and dispersion of light, the engineering of quantum vacuum forces, and strong optical fields and forces associated with light confined to the nanoscale. We will develop powerful and fundamentally new paradigms for atomic trapping, tailoring atomic interactions, and quantum nonlinear optics, which cannot be duplicated in macroscopic systems even in principle. Targeted breakthroughs include: 1) Nanoscale traps using quantum vacuum forces. Nanophotonic structures enable strong quantum vacuum forces acting on atoms near dielectric surfaces to be harnessed for novel “vacuum traps.” Their figures of merit (e.g., trap depth and spatial confinement) will exceed what is possible with conventional trapping techniques by 1-2 orders of magnitude.

2) Strong long-range spin-photon-phonon interactions. We will show that nanophotonic systems enable the formation of new “quasi-particles” consisting of atoms dressed by localized photonic clouds. These clouds produce strong multi-physics coupling between photons and atomic spins and motion, facilitating novel long-range interactions and the generation of exotic quantum states of light and matter.

3) New routes to single-photon nonlinear optics. We will develop novel techniques to attain strong interactions between individual photons, which are not based upon the saturation of atomic transitions. These approaches will take advantage of engineered long-range interactions between atoms, and “atom-optomechanics” in which the optical response of atoms and their motion strongly couple. Significantly, our protocols will enable a growth in nonlinearities for moderate atom number N, in contrast to conventional cavity QED where the optimal operating point is N=1.


year authors and title journal last update
List of publications.
2019 Mohammad Mirhosseini, Eunjong Kim, Xueyue Zhang, Alp Sipahigil, Paul B. Dieterle, Andrew J. Keller, Ana Asenjo-Garcia, Darrick E. Chang, Oskar Painter
Cavity quantum electrodynamics with atom-like mirrors
published pages: 692-697, ISSN: 0028-0836, DOI: 10.1038/s41586-019-1196-1
Nature 569/7758 2019-11-07
2018 Lukas Neumeier, Tracy E. Northup, Darrick E. Chang
Reaching the optomechanical strong-coupling regime with a single atom in a cavity
published pages: , ISSN: 2469-9926, DOI: 10.1103/physreva.97.063857
Physical Review A 97/6 2019-10-29
2017 Frédéric Peyskens, Darrick Chang, Dirk Englund
Integrated nanoplasmonic quantum interfaces for room-temperature single-photon sources
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.96.235151
Physical Review B 96/23 2019-10-29
2018 E. Munro, A. Asenjo-Garcia, Y. Lin, L. C. Kwek, C. A. Regal, D. E. Chang
Population mixing due to dipole-dipole interactions in a one-dimensional array of multilevel atoms
published pages: , ISSN: 2469-9926, DOI: 10.1103/physreva.98.033815
Physical Review A 98/3 2019-10-29
2019 Andreas Albrecht, Loïc Henriet, Ana Asenjo-Garcia, Paul B Dieterle, Oskar Painter, Darrick E Chang
Subradiant states of quantum bits coupled to a one-dimensional waveguide
published pages: 25003, ISSN: 1367-2630, DOI: 10.1088/1367-2630/ab0134
New Journal of Physics 21/2 2019-10-29
2019 Loïc Henriet, James S. Douglas, Darrick E. Chang, Andreas Albrecht
Critical open-system dynamics in a one-dimensional optical-lattice clock
published pages: , ISSN: 2469-9926, DOI: 10.1103/physreva.99.023802
Physical Review A 99/2 2019-10-29
2018 Lukas Neumeier, Darrick E Chang
Exploring unresolved sideband, optomechanical strong coupling using a single atom coupled to a cavity
published pages: 83004, ISSN: 1367-2630, DOI: 10.1088/1367-2630/aad497
New Journal of Physics 20/8 2019-10-29
2018 M T Manzoni, M Moreno-Cardoner, A Asenjo-Garcia, J V Porto, A V Gorshkov, D E Chang
Optimization of photon storage fidelity in ordered atomic arrays
published pages: 83048, ISSN: 1367-2630, DOI: 10.1088/1367-2630/aadb74
New Journal of Physics 20/8 2019-10-29
2019 Maria Moreno-Cardoner, David Plankensteiner, Laurin Ostermann, Darrick E. Chang, Helmut Ritsch
Subradiance-enhanced excitation transfer between dipole-coupled nanorings of quantum emitters
published pages: , ISSN: 2469-9926, DOI: 10.1103/physreva.100.023806
Physical Review A 100/2 2019-10-29
2017 J. Perczel, J. Borregaard, D. E. Chang, H. Pichler, S. F. Yelin, P. Zoller, M. D. Lukin
Photonic band structure of two-dimensional atomic lattices
published pages: , ISSN: 2469-9926, DOI: 10.1103/physreva.96.063801
Physical Review A 96/6 2019-08-30
2016 James S. Douglas, Tommaso Caneva, Darrick E. Chang
Photon Molecules in Atomic Gases Trapped Near Photonic Crystal Waveguides
published pages: , ISSN: 2160-3308, DOI: 10.1103/PhysRevX.6.031017
Physical Review X 6/3 2019-08-30
2017 A. Asenjo-Garcia, J. D. Hood, D. E. Chang, H. J. Kimble
Atom-light interactions in quasi-one-dimensional nanostructures: A Green\'s-function perspective
published pages: , ISSN: 2469-9926, DOI: 10.1103/physreva.95.033818
Physical Review A 95/3 2019-08-30
2015 Tommaso Caneva, Marco T Manzoni, Tao Shi, James S Douglas, J Ignacio Cirac, Darrick E Chang
Quantum dynamics of propagating photons with strong interactions: a generalized input–output formalism
published pages: 113001, ISSN: 1367-2630, DOI: 10.1088/1367-2630/17/11/113001
New Journal of Physics 17/11 2019-08-30
2017 Marco T. Manzoni, Darrick E. Chang, James S. Douglas
Simulating quantum light propagation through atomic ensembles using matrix product states
published pages: , ISSN: 2041-1723, DOI: 10.1038/s41467-017-01416-4
Nature Communications 8/1 2019-08-30
2017 Marco T. Manzoni, Ludwig Mathey, Darrick E. Chang
Designing exotic many-body states of atomic spin and motion in photonic crystals
published pages: 14696, ISSN: 2041-1723, DOI: 10.1038/ncomms14696
Nature Communications 8 2019-08-30
2017 Andreas Albrecht, Tommaso Caneva, Darrick E Chang
Changing optical band structure with single photons
published pages: 115002, ISSN: 1367-2630, DOI: 10.1088/1367-2630/aa83ea
New Journal of Physics 19/11 2019-08-30
2017 A. Asenjo-Garcia, M. Moreno-Cardoner, A. Albrecht, H. J. Kimble, D. E. Chang
Exponential Improvement in Photon Storage Fidelities Using Subradiance and “Selective Radiance” in Atomic Arrays
published pages: , ISSN: 2160-3308, DOI: 10.1103/PhysRevX.7.031024
Physical Review X 7/3 2019-08-30
2015 A. González-Tudela, V. Paulisch, D. E. Chang, H. J. Kimble, J. I. Cirac
Deterministic Generation of Arbitrary Photonic States Assisted by Dissipation
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.115.163603
Physical Review Letters 115/16 2019-08-30
2016 Ivan Iakoupov, Johan R. Ott, Darrick E. Chang, Anders S. Sørensen
Dispersion relations for stationary light in one-dimensional atomic ensembles
published pages: , ISSN: 2469-9926, DOI: 10.1103/PhysRevA.94.053824
Physical Review A 94/5 2019-08-30
2015 Tao Shi, Darrick E. Chang, J. Ignacio Cirac
Multiphoton-scattering theory and generalized master equations
published pages: , ISSN: 1094-1622, DOI: 10.1103/PhysRevA.92.053834
Physical Review A 92/5 2019-08-30
2015 J. S. Douglas, H. Habibian, C.-L. Hung, A. V. Gorshkov, H. J. Kimble, D. E. Chang
Quantum many-body models with cold atoms coupled to photonic crystals
published pages: 326-331, ISSN: 1749-4885, DOI: 10.1038/nphoton.2015.57
Nature Photonics 9/5 2019-08-30
2016 Zachary Eldredge, Pablo Solano, Darrick Chang, Alexey V. Gorshkov
Self-organization of atoms coupled to a chiral reservoir
published pages: , ISSN: 2469-9926, DOI: 10.1103/PhysRevA.94.053855
Physical Review A 94/5 2019-08-30
2015 Lukas Neumeier, Romain Quidant, Darrick E Chang
Self-induced back-action optical trapping in nanophotonic systems
published pages: 123008, ISSN: 1367-2630, DOI: 10.1088/1367-2630/17/12/123008
New Journal of Physics 17/12 2019-08-30
2015 A. González-Tudela, C.-L. Hung, D. E. Chang, J. I. Cirac, H. J. Kimble
Subwavelength vacuum lattices and atom–atom interactions in two-dimensional photonic crystals
published pages: 320-325, ISSN: 1749-4885, DOI: 10.1038/nphoton.2015.54
Nature Photonics 9/5 2019-08-30
2016 Jonathan D. Hood, Akihisa Goban, Ana Asenjo-Garcia, Mingwu Lu, Su-Peng Yu, Darrick E. Chang, H. J. Kimble
Atom–atom interactions around the band edge of a photonic crystal waveguide
published pages: 10507-10512, ISSN: 0027-8424, DOI: 10.1073/pnas.1603788113
Proceedings of the National Academy of Sciences 113/38 2019-08-30
2016 Giuseppe Calajó, Francesco Ciccarello, Darrick Chang, Peter Rabl
Atom-field dressed states in slow-light waveguide QED
published pages: , ISSN: 2469-9926, DOI: 10.1103/PhysRevA.93.033833
Physical Review A 93/3 2019-08-30
2017 Ewan Munro, Leong Chuan Kwek, Darrick E Chang
Optical properties of an atomic ensemble coupled to a band edge of a photonic crystal waveguide
published pages: 83018, ISSN: 1367-2630, DOI: 10.1088/1367-2630/aa7fad
New Journal of Physics 19/8 2019-08-30
2017 J. Perczel, J. Borregaard, D. E. Chang, H. Pichler, S. F. Yelin, P. Zoller, M. D. Lukin
Topological Quantum Optics in Two-Dimensional Atomic Arrays
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.119.023603
Physical Review Letters 119/2 2019-08-30

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