Niklas Teichmann

Dr. rer. nat. Niklas Teichmann

          

Address

Condensed Matter Theory Group
Institut für Physik
Carl von Ossietzky Universität
D-26111 Oldenburg

phone  +49 441 798 3994
fax  +49 441 798 3080
email  teichmann@(NOSPAM)theorie.physik.uni-oldenburg.de
room  W2 2-270

Fields of Research

  • Bose-Einstein condensation
  • Mesoscopic entanglement generation
  • High-order perturbation theory for correlated Boson systems
See also the research-homepage of the Condensed Matter Theory Group.

Publications

  1. N. Teichmann, D. Hinrichs and M. Holthaus:
    Reference data for phase diagrams of triangular and hexagonal bosonic lattices ,
    EPL (Europhysics Letters) 91, 10004 (2010) (arXiv:1007.0685)
     
  2. B. Gertjerenken, S. Arlinghaus, N. Teichmann, C. Weiss:
    Reproducible mesoscopic superpositions of Bose-Einstein condensates and mean-field chaos ,
    accepted for publication in PRA (arXiv:1008.0314)
     
  3. N. Teichmann and D. Hinrichs:
    Scaling property of the critical hopping parameters for the Bose-Hubbard model ,
    Eur. Phys. J. B 71, 219 (2009) (arXiv:0909.3209)
     
  4. N. Teichmann, M. Esmann and C. Weiss:
    Fractional photon-assisted tunneling for Bose-Einstein condensates
    in a double well    ,
    Phys. Rev. A 79, 063620 (2009). (arXiv:0905.2838)
     
  5. N. Teichmann, D. Hinrichs, M. Holthaus and A. Eckardt:
    Process-chain approach to the Bose-Hubbard model:
    Ground-state properties and phase diagram         ,
    Phys. Rev. B 79, 224515 (2009). (arXiv:0904.0905)
    Also selected editorially for publication in the July 2009 issue of the Virtual Journal of Atomic Quantum Fluids.
     
  6. N. Teichmann, D. Hinrichs, M. Holthaus and A. Eckardt:
    Bose-Hubbard phase diagram with arbitrary integer filling,
    Phys. Rev. B 79, 100503(R) (2009). (arXiv:0811.1136)
    Also selected editorially for publication in the March 15, 2009 issue of the Virtual Journal of Applications of Superconductivity.
     
  7. C. Weiss and N. Teichmann:
    Bose-Einstein condensates in a double well: mean-field chaos and multi-particle entanglement
    Laser Physics 19, 673 (2009)
     
  8. C. Weiss and N. Teichmann:
    Signatures of chaos-induced mesoscopic entanglement,
    J. Phys. B: At. Mol. Opt. Phys. 42, (2009) 031001.
    Also highlighted in Europhysics News 40/2.
     
  9. C. Weiss and N. Teichmann:
    Differences between mean-field dynamics and N-particle quantum dynamics as a signature of entanglement,
    Phys. Rev. Lett. 100, 140408 (2008). (arXiv:0805.0531)
    Also selected editorially for publication in the April 21, 2008 issue of Virtual Journal of Nanoscale Science & Technology and for the April 2008 issue of Virtual Journal of Quantum Information.
     
  10. C. Weiss and N. Teichmann:
    Generation of mesoscopic superpositions of a binary Bose-Einstein condensate in a slightly asymmetric double well,
    Laser Phys. Lett. 4, 895 (2007). (arXiv:0707.4061)
     
  11. N. Teichmann and C. Weiss:
    Coherently controlled entanglement generation in a binary Bose-Einstein condensate,
    EPL 78, 10009 (2007). (arXiv:cond-mat/0702241)
    Also selected editorially for the EPL compilations on Bose Einstein condensates & ultracold gases and thus freely accessible until the end of 2008.
     
  12. N. Teichmann, C. Weiss, and M. Holthaus:
    From Many-Body Interaction to Nonlinearity, in: proceedings of the 6th International Summer School and Conference "Let's Face Chaos through Nonlinear Dynamics", Maribor, 2005.
    Nonlinear Phenomena in Complex Systems 9, 254 (2006).
     

Talks

  • Process-chain approach to the Bose-Hubbard model
    Spring meeting of the German Physical Society, Hanover
    March 2010
  • High-order perturbation theory for the Bose-Hubbard model
    Theoretical seminar, Adam Mickiewicz University, Poznan
    October 2009
  • Störungsrechnung in hohen Ordnungen für das Bose-Hubbard Modell
    Kolloquium Theoretische Physik, Universität Oldenburg
    April 2009
  • Bose-Hubbard phase diagram with arbitrary integer filling
    Spring meeting of the German Physical Society, Hamburg
    March 2009
  • Differences of Mean Field and N-Particle Dynamics as a Signature of Entanglement
    Spring meeting of the German Physical Society, Darmstadt
    March 2008
  • From Many Body Interaction to Nonlinearity
    Spring meeting of the German Physical Society, Düsseldorf
    March 2007

 

Diploma Thesis

Bose-Einstein-Kondensate in einer Doppelmulde: Kontrolle und Verschränkung
(Oldenburg, February 2007, supervisor: Professor Dr. M. Holthaus)

Teaching

  • Tutorial Festkörperphysik (Winter 2007)
  • Tutorial Vorkurs Mathematik (Winter 2006)
  • Tutorial Thermodynmik & Statistik (Summer 2006)

Links

[TCM Group Oldenburg]

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