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Phonton SIGNED

Phon(t)on-induced phase transitions

Total Cost €


EC-Contrib. €






Project "Phonton" data sheet

The following table provides information about the project.


Organization address
city: BONN
postcode: 53113

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]
 Total cost 1˙486˙973 €
 EC max contribution 1˙486˙973 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2014-CoG
 Funding Scheme ERC-COG
 Starting year 2015
 Duration (year-month-day) from 2015-09-01   to  2021-08-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

One of our dreams for the future is to control and manipulate complex materials and devices at will. This progress would revolutionize technology and influence many aspects of our everyday life. A promising direction is the control of material properties by electromagnetic radiation leading to photo-induced phase transitions. An example of such a transition is the reported dynamically induced superconductivity via a laser pulse. Whereas the theoretical description of the coupling of fermions to bosonic modes in equilibrium has seen enormous progress and explains highly non-trivial phenomena as the phonon-induced superconductivity, driven systems pose many puzzles. In addition to the inherent time-dependence of the external driving field, a multitude of possible excitation and relaxation mechanisms challenge the theoretical understanding. Recently in the field of quantum optics, a much cleaner realization of a photo-induced phase transition, the Dicke transition, has been observed for bosonic quantum gases loaded in an optical cavity. Above a critical pump strength of an external laser field, the ensemble undergoes a transition to an ordered phase. We aim to advance the general theoretical understanding of photo-induced phase transitions both in the field of solid state physics and quantum optics. In particular, we will focus on the design and investigation of photo-induced transitions to unconventional superconductivity and non-trivial topological phases. Our insights will be applied to fermonic quantum gases in optical cavities and solid state materials. In order to treat these systems efficiently, we will develop new variants of the numerical density matrix renormalization group (or also called matrix product state) methods and combine these with analytical approaches.


year authors and title journal last update
List of publications.
2019 Ameneh Sheikhan, Corinna Kollath
Cavity-induced superconducting and 4 k F charge-density-wave states
published pages: , ISSN: 2469-9926, DOI: 10.1103/PhysRevA.99.053611
Physical Review A 99/5 2020-03-24
2019 Johannes Kombe, Jean-Sébastien Bernier, Michael Köhl, Corinna Kollath
Finite-duration interaction quench in dilute attractively interacting Fermi gases: Emergence of preformed pairs
published pages: , ISSN: 2469-9926, DOI: 10.1103/PhysRevA.100.013604
Physical Review A 100/1 2020-03-24
2019 Philipp Höllmer, Jean-Sébastien Bernier, Corinna Kollath, Christian Baals, Bodhaditya Santra, Herwig Ott
Talbot effect in the presence of interactions
published pages: , ISSN: 2469-9926, DOI: 10.1103/physreva.100.063613
Physical Review A 100/6 2020-03-24
2019 Catalin-Mihai Halati, Ameneh Sheikhan, Corinna Kollath
Cavity-induced spin-orbit coupling in an interacting bosonic wire
published pages: , ISSN: 2469-9926, DOI: 10.1103/PhysRevA.99.033604
Physical Review A 99/3 2020-03-24
2019 Heinrich Fröml, Alessio Chiocchetta, Corinna Kollath, Sebastian Diehl
Fluctuation-Induced Quantum Zeno Effect
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.122.040402
Physical Review Letters 122/4 2020-03-24
2019 Stefan Wolff, Jean-Sébastien Bernier, Dario Poletti, Ameneh Sheikhan, Corinna Kollath
Evolution of two-time correlations in dissipative quantum spin systems: Aging and hierarchical dynamics
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.100.165144
Physical Review B 100/16 2020-03-24
2020 Stefan Wolff, Ameneh Sheikhan, Sebastian Diehl, Corinna Kollath
Nonequilibrium metastable state in a chain of interacting spinless fermions with localized loss
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.101.075139
Physical Review B 101/7 2020-03-24
2018 A. Behrle, T. Harrison, J. Kombe, K. Gao, M. Link, J.-S. Bernier, C. Kollath, M. Köhl
Higgs mode in a strongly interacting fermionic superfluid
published pages: , ISSN: 1745-2473, DOI: 10.1038/s41567-018-0128-6
Nature Physics 2019-09-02
2016 Ameneh Sheikhan, Ferdinand Brennecke, and Corinna Kollath
Cavity-induced generation of nontrivial topological states in a two-dimensional Fermi gas
published pages: 061603(R), ISSN: 2469-9934, DOI: 10.1103/PhysRevA.94.061603
Phys. Rev. A 94 2019-09-02
2016 Corinna Kollath, Ameneh Sheikhan, Stefan Wolff, and Ferdinand Brennecke
Ultracold Fermions in a Cavity-Induced Artificial Magnetic Field
published pages: 60401, ISSN: 1079-7114, DOI: 10.1103/PhysRevLett.116.060401
Phys. Rev. Lett. 116 2019-09-02
2017 M. A. Sentef, A. Tokuno, A. Georges, and C. Kollath
Theory of Laser-Controlled Competing Superconducting and Charge Orders
published pages: 87002, ISSN: 1079-7114, DOI: 10.1103/PhysRevLett.118.087002
Phys. Rev. Lett. 118 2019-09-02
2016 E. Coira, P. Barmettler, T. Giamarchi, C. Kollath
Temperature dependence of the NMR spin-lattice relaxation rate for spin- 1 2 chains
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.94.144408
Physical Review B 94/14 2019-09-02
2017 Karla Loida, Jean-Sébastien Bernier, Roberta Citro, Edmond Orignac, Corinna Kollath
Probing the Bond Order Wave Phase Transitions of the Ionic Hubbard Model by Superlattice Modulation Spectroscopy
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.119.230403
Physical Review Letters 119/23 2019-09-02
2016 Ameneh Sheikhan, Ferdinand Brennecke, and Corinna Kollath
Cavity-induced chiral states of fermionic quantum gases
published pages: 43609, ISSN: 2469-9934, DOI: 10.1103/PhysRevA.93.043609
Phys. Rev. A 93 2019-09-02
2016 M. A. Sentef, A. F. Kemper, A. Georges, and C. Kollath
Theory of light-enhanced phonon-mediated superconductivity
published pages: 144506, ISSN: 2469-9969, DOI: 10.1103/PhysRevB.93.144506
Phys. Rev. B 93 2019-09-02
2016 Stefan Wolff, Ameneh Sheikhan, and Corinna Kollath
Dissipative time evolution of a chiral state after a quantum quench
published pages: 43609, ISSN: 2469-9934, DOI: 10.1103/PhysRevA.94.043609
Phys. Rev. A 94 2019-09-02
2018 E. Coira, P. Barmettler, T. Giamarchi, C. Kollath
Finite-temperature dynamical correlations for the dimerized spin- 1 2 chain
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.98.104435
Physical Review B 98/10 2019-09-02

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