Ralph Krupke

Karlsruhe Institute of Technology

Ralph Krupke

Waveguide Integrated Electrically Driven Carbon Nanotube Light Sources


R. Krupke12


1Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe 76021, GERMANY

2Institute of Materials Science, Technische Universität Darmstadt, Darmstadt 64287, GERMANY



We will present our recent progress in fabricating waveguide-integrated carbon nanotube light sources with superconducting single photon detectors [1]. This complete quantum photonic circuit allows for on-chip correlation experiments to explore non-classical light emission. We will furthermore explain how the photonic environment can be used to tailor the emission wavelength and linewidth of a nanotube emitter [2] and the feasibility of carbon nanotube transducers for fast signal processing [3].



[1] S. Khasminskaya et al., Nature Photonics 10, 727 (2016).

[2] F. Pyatkov et al., Nature Photonics 10, 420 (2016).

[3] F. Pyatkov et al., Beilstein J. Nanotechnol. 8, 38 (2017).



Prof. Ralph Krupke


Technische Universität Darmstadt Karlsruhe Institute of Technology

Department of Materials and Earth Sciences Institute of Nanotechnology

Jovanka-Bontschits-Str. 2 KIT Campus North

64287 Darmstadt, Germany 76021 Karlsruhe

Tel.: +49 6151 16 6306 +49 721 608 26417

E-Mail: r.krupke@mns.tu-darmstadt.de krupke@kit.edu


Professor Molecular Nanostructures, Technische Universität Darmstadt

Research Unit Chair Charge Transport and Light-Matter Interaction in Carbon Nanosystems, Institute of Nanotechnology, Karlsruhe Institute of Technology

12. Juni 1968, Karlsruhe, male


Academic education and degrees

1996 1999 PhD in Physics, Tel Aviv University, 1999

1989 1995 Diplom-Physik, Universität Karlsruhe, 1995


Career since final degree

since 2013 Research Unit Chair, Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT)

since 2011 Professor of Molecular Nanostructures, TU Darmstadt

2005 2010 Helmholtz-University-Young-Investigator-Group "Electronic and optical properties of molecular nanostructures", Institute of Nanotechnology, KIT

2000 2004 Postdoctoral Researcher at Forschungszentrum Karlsruhe



2012 IBM Pat Goldberg Memorial Award

2005 Helmholtz-Young-Investigator Award

2004 Erwin-Schrödinger-Award


Selected publications

● Fully integrated quantum photonic circuit with an electrically driven light source. Khasminskaya S, Pyatkov F, Słowik K, Ferrari S, Kahl O, Kovalyuk V, Rath P, Vetter A, Hennrich F, Kappes MM, Gol'tsman G, Korneev A, Rockstuhl C, Krupke R, Pernice WHP, Nat Photonics 2016;10:727732.


● Cavity-enhanced light emission from electrically driven carbon nanotubes, Fütterling F, Khasminskaya S, Flavel BS, Hennrich F, Kappes M, Krupke R, Pernice WHP. Nat Photonics 2016;10:420427.


● Khasminskaya S, Pyatkov F, Flavel BS, Pernice WHP, Krupke R. Waveguide-Integrated Light-Emitting Carbon Nanotubes. Advanced Materials 2014;26:3465-72.


● Lukas M, Meded V, Vijayaraghavan A, Song L, Ajayan PM, Fink K, Wenzel W, Krupke R. Catalytic subsurface etching of nanoscale channels in graphite. Nat Commun. 2013;4:1379.


● High-frequency performance of scaled carbon nanotube array field-effect transistors, Steiner M, Engel M, Lin YM, Wu Y, Jenkins K, Farmer DB, Humes JJ, Yoder NL, Seo JWT, Green AA, Hersam MC, Krupke R, Avouris P. Appl. Phys. Lett. 2012;101:053123.


● Eckmann A, Felten A, Mishchenko A, Britnell L, Krupke R, Novoselov KS, Casiraghi C. Probing the Nature of Defects in Graphene by Raman Spectroscopy. Nano Letters 2012;12:3925-30


● Engel M, Steiner M, Lombardo A, Ferrari AC, v. Löhneysen H, Avouris P, Krupke R. Lightmatter interaction in a microcavity-controlled graphene transistor. Nat Commun. 2012;3:906.


Web: http://www.int.kit.edu/1244_ralph.krupke.php