Our research focuses on light-matter interactions in low-dimensional quantum materials. We develop experimental techniques inspired by optical spectroscopy, nano-optomechanics and device physics to investigate hybrid systems, notably van der Waals heterostructures made from two-dimensional materials such as graphene, atomically-thin semiconductors and magnets. We explore novel optical phenomena and quantum phases of matter, either inherited from the reduced dimensionality or arising from proximity effects yet to be understood.

We are located at IPCMS, a research institute co-hosted by CNRS & Université de Strasbourg in France, on the Cronenbourg campus.

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The team

S. Berciaud A. Gloppe Q. Fenoy A. Moghe M. Romeo J. Wolff
mail: firstname.LASTNAME@ipcms.unistra.fr

Join us

We are always looking for motivated and talented scientists interested in joining our research group
as interns, PhDs and post-doctoral fellows. Do not hesitate to contact us.

A PhD and a postdoc positions are currently available.


Strasbourg France International

Ongoing funded projects

Selected publications (2018 —)

Google Scholar: [S. Berciaud] [A. Gloppe]

  1. Symmetry-dependent dielectric screening of optical phonons in monolayer graphene.
    L. Moczko, S. Reichardt, A. Singh, X. Zhang, L.E. Parra López, J.L.P. Wolff, A.R. Moghe, E. Lorchat, R. Singh, K. Watanabe, T. Taniguchi, H. Majjad, M. Romeo, A. Gloppe, L. Wirtz & S. Berciaud
    arXiv 2310.13868 (2023) [preprint]
  2. Tip-induced excitonic luminescence nanoscopy of an atomically resolved van der Waals heterostructure.
    L.E. Parra López, A. Rosławska, F. Scheurer, S. Berciaud & G. Schull
    Nature Materials 22, 482 (2023) [link] [news & views] [press release] [preprint]
  3. Tip-induced and electrical control of the photoluminescence yield of monolayer WS2.
    R.J. Peña Román, D. Pommier, R. Bretel, L.E. Parra López, E. Lorchat, E. Boer-Duchemin, G. Dujardin, A. G. Borisov, L.F. Zagonel, G. Schull, S. Berciaud & E. Le Moal
    Nano Letters 22, 9244 (2022) [link]
  4. Electroluminescence of monolayer in a scanning tunneling microscope: effect of bias polarity on spectral and angular distribution of emitted light.
    R. J. Peña Román, D. Pommier, R. Bretel, L. E. Parra López, E. Lorchat, J. Chaste, A. Ouerghi, S. Le Moal, E. Boer-Duchemin, G. Dujardin, A. G. Borisov, L. F. Zagonel, G. Schull, S. Berciaud & E. Le Moal
    Physical Review B 106, 085419 (2022) [link] [preprint]
  5. Picosecond energy transfer in a transition metal dichalcogenide–graphene heterostructure revealed by transient Raman spectroscopy.
    C. Ferrante, G. Di Battista, L.E. Parra López, G. Batignani, E. Lorchat, A. Virga, S. Berciaud & T. Scopigno
    Proceedings of the National Academy of Sciences 119, 15 (2022) [link] [preprint]
  6. Magnon-exciton proximity coupling at a van der Waals heterointerface.
    A. Gloppe, M. Onga, R. Hisatomi, A. Imamoglu, Y. Nakamura, Y. Iwasa & K. Usami
    Physical Review B 105, L121403 (2022) [link] [preprint]
  7. Single- and narrow-line photoluminescence in a boron nitride-supported MoSe2 /graphene heterostructure.
    L.E. Parra López, L. Moczko, J. Wolff, A. Singh, E. Lorchat, M. Romeo, T. Taniguchi, K. Watanabe & S. Berciaud
    Comptes Rendus. Physique 22, 77(2021) [link] [preprint]
  8. Dynamically-enhanced strain in atomically thin resonators.
    X. Zhang, K. Makles, L. Colombier, D. Metten, H. Majjad, P. Verlot & S. Berciaud
    Nature Communications 11, 5526 (2020) [link] [preprint] [UNISTRA highlight]
  9. Many-body effects in suspended graphene probed through magneto-phonon resonances.
    S. Berciaud, M. Potemski & C. Faugeras
    Phys. Status Solidi RRL 14, 2000345(2020) [link] [preprint]
  10. Filtering the photoluminescence spectra of atomically thin semiconductors with graphene.
    E. Lorchat*, L.E. Parra López*, C. Robert, D. Lagarde, G. Froehlicher, T. Taniguchi, K. Watanabe, X. Marie & S. Berciaud
    Nature Nanotechnology 15, 283-288 (2020) [link] [preprint] [CNRS highlight] [Nature Nano blog]
  11. Hybrid quantum systems based on magnonics.
    D. Lachance-Quirion, Y. Tabuchi, A. Gloppe, K. Usami & Y. Nakamura
    Applied Physics Express 12 , 070101 (2019) [link] [preprint]
  12. Helicity-changing Brillouin light scattering by magnons in a ferromagnetic crystal.
    R. Hisatomi, A. Noguchi, R. Yamazaki, Y. Nakata, A. Gloppe, Y. Nakamura & K. Usami
    Physical Review Letters 123, 207401 (2019) [link] [preprint]
  13. Resonant magnetic induction tomography of a magnetized sphere.
    A. Gloppe, R. Hisatomi, Y. Nakata, Y. Nakamura & K. Usami
    Physical Review Applied 12, 014061 (2019) [link] [preprint]
  14. Quasi-two-dimensional electron–hole droplets.
    S. Berciaud
    Nature Photonics 13, 225-226 (2019) [link]
  15. Room-temperature valley polarization and coherence in transition metal dichalcogenide–graphene van der Waals heterostructures.
    E. Lorchat, S. Azzini, T. Chervy, T. Taniguchi, K. Watanabe, T.W. Ebbesen, C. Genet & S. Berciaud
    ACS Photonics 5, 5047-5054 (2018) [link][preprint]
  16. Brillouin light scattering by magnetic quasivortices in cavity optomagnonics.
    A. Osada, A. Gloppe, R. Hisatomi, A. Noguchi, R. Yamazaki, M. Nomura, Y. Nakamura & K. Usami
    Physical Review Letters 120, 133602 (2018) [link][preprint]
  17. Room temperature chiral coupling of valley excitons with spin-momentum locked surface plasmons.
    T. Chervy, S. Azzini, E. Lorchat, S. Wang, Y. Gorodetski, J.A. Hutchison, S. Berciaud, T.W. Ebbesen & C. Genet
    ACS Photonics 5, 1281-1287 (2018) [link][preprint]
  18. Charge versus energy transfer in atomically thin graphene-transition metal dichalcogenide van der Waals heterostructures.
    G. Froehlicher, E. Lorchat & S. Berciaud
    Physical Review X 8, 011007 (2018) [link][preprint] [CNRS highlight]


Stéphane Berciaud or Arnaud Gloppe (office 1021).

+33 (0)3 88 10 72 56

Lab address
Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS)
CNRS & Université de Strasbourg
23 rue du Loess
67034 Strasbourg, France