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Frank Koppens

Frank Koppens

Institut de Ciències Fotòniques

Experimental Sciences & Mathematics

Prof. Frank Koppens is group leader at the Institute of Photonic Sciences (ICFO).  The quantum nano-optoelectronics group of Prof. Koppens focuses on both science and technology of novel two-dimensional materials and quantum materials. Prof. Koppens is work package laeder and vice-chairman of the executive board of the graphene flagship program, a 1000 MillionEuro project for 10 years.  Koppens has received five ERC awards: the ERC starting grant, the ERC consolidator grant, and three ERC proof-of-concept grants. Other awards include the Christiaan Hugyensprijs 2012, the national award for research in Spain, the IUPAP young scientist prize in optics, and the ACS photonics investigator award.  Since 2018 Koppens is on the Clarivate list for highly cited researchers, in the physics category. In total, Koppens has published more than 110 refereed papers (H-index 65), and total number of citations exceeds 30.000 (google scholar).

Research interests

The quantum nano-optoelectronics group, led by Prof. Koppens, studies the basic science and applications of two-dimensional materials, and in particular the interactions with light at extreme limits.  Central in these studies are the rich variety of novel materials that are only one atom thick: graphene and 2d materials. These materials exhibit fascinating properties and in particular, by building stacks of these layered materials, completely new material systems can be created atom-by-atom: atomic lego! By stacking and twisting these materials, completely new optical, electronic and optoelectronic properties can be realized. We apply several unique and novel techniques study physical processes with nano-optoelectronic imaging techniques, operating with infrared and terahertz light. This includes unique low-temperature near-field imaging techniques to probe the electronic response to light with nanometer-scale spatial resolution. One of the more recent objectives is to marry the topological and many-body phenomena of 2d-material heterostructures with nano-photonics.  To confine and control light at the nanoscale and to enhance light-matter interactions, we are exploring the vast library of polaritonic modes in 2D materials. Confinement of light down to the atomic scale has been demonstrated and paves the way to strong interactions between light and quantum materials, with potential to unveil new states of matter not accessible before. In addition to the new science and physics, the group develops new concepts for photo-detection, imaging systems, optical modulation, nano-scale light processing and switching, as well as flexible and wearable health and fitness devices. We aim to build prototypes of these disruptive technologies, in collaboration with industry. The group works closely with the Graphene Flagship program and large industries worldwide.

Selected publications

– Block A, Principi A, Hesp NCH, Cummings AW, Liebel M, Watanabe K, Taniguchi T, Roche S, Koppens FHL, van Hulst NF & Tielrooij K, Jan 2021, ‘Observation of giant and tunable thermal diffusivity of a Dirac fluid at room temperature’, Nature Nanotechnology, 16, pages 1195–1200.

– Costa AT, Gonçalves PAD, Basov DN, Koppens FHL, Mortensen NA & Peres NMR, ‘Harnessing ultraconfined graphene plasmons to probe the electrodynamics of superconductors’, PNAS, 118, e2012847118 (2021)

– Hesp NCH, Torre I, Rodan-Legrain D, Novelli P, Cao Y, Carr S, Fang S, Stepanov P, Barcons-Ruiz D, Herzig Sheinfux H, Watanabe K, Taniguchi T, Efetov DK, Kaxiras E, Jarillo-Herrero P, Polini M & Koppens FHL; “Observation of interband collective excitations in twisted bilayer graphene”; Nature Physics volume 17, pages1162–1168 (2021)

– Hesp NCH, Torre I, Barcons-Ruiz D, Sheinfux HH, Watanabe K, Taniguchi T, Kumar RK & Koppens, FHL, 2021, ‘Nano-imaging photoresponse in a moire unit cell of minimally twisted bilayer graphene’, Nature Communications, 12, 1, 1640.

– Toninelli C, Gerhardt I, Clark AS, Reserbat-Plantey A, Goetzinger S, Ristanovic Z, Colautti M, Lombardi P, Major KD, Deperasinska I, Pernice WH. Koppens FHL, Kozankiewicz B, Gourdon A, Sandoghdar V & Orrit M, 2021, ‘Single organic molecules for photonic quantum technologies’, Nature Materials, 20, pages 1615–1628.

– Goncalves PAD, Christensen T, Peres NMR, Jauho AP, Epstein I, Koppens FHL, Soljacic M & Mortensen NA, 2021, ‘Quantum surface-response of metals revealed by acoustic graphene plasmons’, Nature Communications, 12, 1, 3271.

– Agarwal H, Terres B, Orsini L, Montanaro A, Sorianello V, Pantouvaki M, Watanabe K, Taniguchi T, Van Thourhout D, Romagnoli M & Koppens, FHL, 2021, ‘2D-3D integration of hexagonal boron nitride and a high-kappa dielectric for ultrafast graphene-based electro-absorption modulators’, Nature Communications, 12, 1, 1070.

ICREA Memoir 2021