Research Interests

  • 2D Materials
  • Quantum Dots
  • Single Photon Emitter
  • Cavity QED
  • Quantum Computation and Coherent Control

Academic Career

since 2013 Akademischer Rat at the University of Münster
2012 - 2013 Assistent at Chemnitz Technical University
2010 - 2012

Postdoc at the Laboratoire de Photonique et de Nanostructure (CNRS), Marcoussis, France
"Efficient single photon sources based on quantum dots coupled to photonic-plasmonic hybrid cavities."

2004 - 2009 PhD student at University of Paderborn (Prof. A. Zrenner)
Dissertation "Coherent optoelectronic control of single excitons"
1999 - 2004

Studies of Physics at the University of Paderborn
Diploma thesis "Spectroscopy on electrically controllable, single quantum dots" (Prof. A. Zrenner)

Publications

  • Valley-contrasting optics of interlayer excitons in Mo- and W-based bulk transition metal dichalcogenides, A. Arora, T. Deilmann, P. Marauhn, M. Drüppel, R. Schneider, M. R. Molas, D. Vaclavkova, S. Michaelis de Vasconcellos, M. Rohlfing, M. Potemski, and R. Bratschitsch, Nanoscale, Accepted Manuscript (2018)

  • Exciton-phonon coupling in mono- and bilayer MoTe2 ,S. Helmrich, R. Schneider, A. W. Achtstein, A. Arora, B. Herzog, S. Michaelis de Vasconcellos, M. Kolarczik, O. Schoeps, R. Bratschitsch, U. Woggon, and 2D Materials 5, 045007 (2018)

  • Incorporation of oxygen atoms as a mechanism for photoluminescence enhancement of chemically treated MoS2, C. Schwermann, T. Stiehm, P. Tonndorf, R. Schneider, R. Schmidt, J. Kern, S. Michaelis de Vasconcellos, R. Bratschitsch, and N. L. Doltsinis, Phys. Chem. Chem. Phys. 20, 16918-16923 (2018)

  • Strain transfer across grain boundaries in MoS2 monolayers grown by chemical vapor deposition, I. Niehues, A. Blob, T. Stiehm, R. Schmidt, ,

  • Inverted valley polarization in optically excited transition metal dichalcogenides, G. Berghäuser, I. Bernal-Villamil, R. Schmidt, R. Schneider, I. Niehues, P. Erhart, S. Michaelis de Vasconcellos, R. Bratschitsch, A. Knorr, and E. Malic, Nature Communications 9, 971 (2018)

  • Exciton broadening and band renormalization due to Dexter-like intervalley coupling, I. Bernal-Villamil, G. Berghäuser, M. Selig, I. Niehues, R. Schmidt, R. Schneider, P. Tonndorf, P. Erhart, S. Michaelis de Vasconcellos, R. Bratschitsch, A. Knorr, and E. Malic, 2D Materials 5, 025011 (2018)

  • Strain control of exciton-phonon coupling in atomically thin semiconductors , I. Niehues, R. Schmidt, M. Drüppel, P. Marauhn, D. Christiansen, M. Selig, G. Berghäuser, D. Wigger, R. Schneider, L. Braasch, R. Koch, A. Castellanos-Gomez, T. Kuhn, A. Knorr, E. Malic, M. Rohlfing, S. Michaelis de Vasconcellos, and R. Bratschitsch, Nano Lett. 18, 1751-1757 (2018)

  • Phonon sidebands in monolayer transition metal dichalcogenides, D. Christiansen, M. Selig, G. Berghäuser, R. Schmidt, I. Niehues, R. Schneider, A. Arora, S. Michaelis de Vasconcellos, R.  Bratschitsch, E. Malic, and A. Knorr, Phys. Rev. Lett. 119, 187402 (2017)

  • Interlayer excitons in a bulk van der Waals semiconductor, A. Arora, M. Drüppel, R. Schmidt, T. Deilmann, R. Schneider, M. R. Molas, P. Marauhn, S. Michaelis de Vasconcellos, M. Potemski, M. Rohlfing, and R. Bratschitsch, Nature Communications 8, 639 (2017)

  • On-chip waveguide coupling of a layered semiconductor single-photon source, P. Tonndorf, O. Del Pozo Zamudio, N. Gruhler, J. Kern, R. Schmidt, A. I. Dmitriev, A. P. Bakhtinov, A. I. Tartakovskii, W. HP Pernice, S. Michaelis de Vasconcellos, and R. Bratschitsch, Nano Lett. 17, 5446 (2017)
  • Biaxial strain tuning of the optical properties of single-layer transition metal dichalcogenides, R. Frisenda, M. Drüppel, R. Schmidt, S. Michaelis de Vasconcellos, D. Perez de Lara, R. Bratschitsch, M. Rohlfing, and A. Castellanos-Gomez, npj 2D Materials and Applications 1, 10 (2017)
  • Polarization contrast scattering spectroscopy of individual metal nanoantennas, T. Stiehm, J. Kern, R. Schmidt, S. Michaelis de Vasconcellos, and R. Bratschitsch, Appl. Phys. B 123, 150 (2017)
  • Highly anisotropic in-plane excitons in atomically thin and bulk-like 1T'-ReSe2, A. Arora, J. Noky, M. Drüppel, B. Jariwala, T. Deilmann, R. Schneider, R. Schmidt, O. Del Pozo Zamudio, T. Stiehm, A. Bhattacharya, P. Krüger, S. Michaelis de Vasconcellos, M. Rohlfing and R. Bratschitsch, Nano Lett. 17, 3202 (2017)
  • Single-photon emitters in GaSe, P. Tonndorf, S. Schwarz, J. Kern, I. Niehues, O. Del Pozo Zamudio, A. Dmitriev, A. Bakhtinov, D. Borisenko, N. Kolesnikov, A. Tartakovskii, S. Michaelis de Vasconcellos, and R. Bratschitsch, 2D Materials 4, 021010 (2017)
  • Magnetic-field-induced rotation of polarized light emission from monolayer WS2, R. Schmidt, A. Arora, G. Plechinger, P. Nagler, A. Granados del Águila, M. V. Ballottin, P. C. M. Christianen, S. Michaelis de Vasconcellos, C. Schüller, T. Korn, and R. Bratschitsch, Phys. Rev. Lett., 117, 077402 (2016)
  • Nanoscale positioning of single-photon emitters in atomically thin WSe2, J. Kern, I. Niehues, P. Tonndorf, R. Schmidt, D. Wigger, R. Schneider, T. Stiehm, S. Michaelis de Vasconcellos, D. E. Reiter, T. Kuhn and R. Bratschitsch, Advanced Materials 28, 7101 (2016)
  • Reversible uniaxial strain tuning in atomically thin WSe2, R. Schmidt, I. Niehues, R. Schneider, M. Drüppel, T. Deilmann, M. Rohlfing, S. Michaelis de Vasconcellos, A. Castellanos-Gomez, and R. Bratschitsch, 2D Materials 3, 021011 (2016)
  • Ultrafast Coulomb-induced intervalley coupling in atomically thin WS2, R. Schmidt, G. Berghäuser, R. Schneider, M. Selig, P. Tonndorf, E. Malic, A. Knorr, S. Michaelis de Vascocellos, and R. Bratschitsch, Nano Lett. 16, 2945 (2016)
  • Nanoantenna-controlled radiation pattern of the third-harmonic emission, T. Stiehm, J. Kern, M. Jürgensen, S. Michaelis de Vasconcellos, and R. Bratschitsch, Appl. Phys. B 122,119 (2016)
  • Nanoantenna-enhanced light−matter interaction in atomically thin WS2, J. Kern, A. Trügler,I. Niehues, J. Ewering, R. Schmidt, R. Schneider, S. Najmaei, A. George, J. Zhang, J. Lou, U. Hohenester, S. Michaelis de Vasconcellos, and R. Bratschitsch, ACS Photonics 2, 1260 (2015)
  • Single-photon emission from localized excitons in an atomically thin semiconductor, P. Tonndorf, R. Schmidt, R. Schneider, J. Kern, M. Buscema, G. A. Steele, A. Castellanos-Gomez, H. S. J. van der Zant, S. Michaelis de Vasconcellos, R. Bratschitsch, Optica 2, 347 (2015)
  • Photovoltaic and Photothermoelectric Effect in a Double-Gated WSe2 Device, D. J Groenendijk, M. Buscema, G. A. Steele, S. Michaelis de Vasconcellos, R. Bratschitsch, H. S. J. van der Zant, A. Castellanos-Gomez, Nano Lett., 14, 5846 (2014)

  • Ultrafast spin dynamics in magnetic wide-bandgap semiconductors, M. Raskin, T. Stiehm, A. W. Cohn. K. M. Whitaker, S. T. Ochsenbein, S. Michaelis de Vasconcellos, M. S. Brandt, D. R. Gamelin, and R. Bratschitsch, Phys. Stat. Sol. (b), 251, 1685 (2014)

  • Selective Raman modes and strong photoluminescence of gallium selenide flakes on sp2 carbon, R. D. Rodriguez, S. Müller, E. Sheremet, D. R. T. Zahn, A. Villabona, S. A. Lopez-Rivera, P. Tonndorf, S. Michaelis de Vasconcellos, and R. Bratschitsch, J. Vac. Sci. Technol. B 32, 4 (2014)

  • Photoluminescence emission and Raman response of monolayer MoS2, MoSe2, and WSe2, P. Tonndorf, R. Schmidt, P. Böttger, X. Zhang, J. Börner, A. Liebig, M. Albrecht, C. Kloc, O. Gordan, D. R. T. Zahn, S. Michaelis de Vasconcellos, and R. Bratschitsch, Opt. Expr. 21, 4908 (2013)

  • Bright solid-state sources of indistinguishable single photons, O. Gazzano, S. Michaelis de Vasconcellos, C. Arnold, A. Nowak, E. Galopin, I. Sagnes, L. Lanco, A. Lemaître, and P. Senellart, Nature Communications 4, 1425 (2013)

  • Controlling spontaneous emission with plasmonic optical patch antennas, C. Belacel, B. Habert, F. Bigourdan, F. Marquier, J.-P. Hugonin, S. Michaelis de Vasconcellos, X. Lafosse, L. Coolen, C. Schwob,C. Javaux, B. Dubertret, J.-J. Greffet, P. Senellart, and A. Maître, Nano Lett., 13 (4), 1516 (2013)


Older Publications can be found at Google Scholar