Bettina Gertjerenken
 

Dr. rer. nat. Bettina Gertjerenken

Dipl.-Phys.

On leave of absence from Oldenburg University,
Condensed Matter Theory Group

Present address

Department of Mathematics and Statistics
Lederle Graduate Research Tower
University of Massachusetts
Amherst, MA 01003-9305, USA

 
email  b.gertjerenken(at)(NOSPAM)uni-oldenburg.de
room  1546
 

Fields of Research

  • Bose-Einstein condensation
  • mesoscopic entanglement
  • creation of nonlocal quantum superposition states via scattering of bright quantum matter wave solitons
  • vortices in BECs
  • quantum-classical correspondence

See also the research-homepage of the Condensed Matter Theory Group.

Publications

  • B. Gertjerenken, and M. Holthaus
    Quasiparticle tunneling in a periodically driven bosonic Josephson junction,
    Phys. Rev. A 90, 053622 (2014). (arXiv:1411.1632)
  • B. Gertjerenken, and M. Holthaus
    Fluctuations of the order parameter of a mesoscopic Floquet condensate,
    Phys. Rev. A 90, 053614 (2014). (arXiv:1410.8008)
  • B. Gertjerenken, and M. Holthaus
    Trojan quasiparticles,
    New J. Phys. 16, 093009 (2014). (arXiv:1401.0666)
  • T. P. Billam, C. L. Blackley, B. Gertjerenken, S. L. Cornish, C. Weiss
    Entangling two distinguishable quantum bright solitons via collisions,
    J. Phys.: Conf. Ser. 497, 012033 (2014). (arXiv:1407.1217)
  • B. Gertjerenken
    Bright soliton quantum superpositions: signatures of high- and low-fidelity states,
    Phys. Rev. A 88, 053623 (2013). (arXiv:1310.7812)
  • B. Gertjerenken, and C. Weiss:
    Beyond mean-field behavior of large Bose-Einstein condensates in double-well potentials,
    Phys. Rev. A 88, 033608 (2013). (arXiv:1308.5805)
  • B. Gertjerenken, T. B. Billam, C. L. Blackley, C. R. Le Sueur, L. Khaykovich, S. L. Cornish, C. Weiss:
    Generating Mesoscopic Bell States via Collisions of Distinguishable Quantum Bright Solitons,
    Phys. Rev. Lett. 111, 100406 (2013). (arXiv:1301.0718v2)
  • B. Gertjerenken, T. B. Billam, L. Khaykovich, and C. Weiss:
    Scattering bright solitons: quantum versus mean-field behavior,
    Phys. Rev. A 86, 033608 (2012). (arXiv:1208.2941)
  • B. Gertjerenken, and C. Weiss:
    Nonlocal quantum superpositions of bright matter-wave solitons and dimers,
    J. Phys. B: At. Mol. Opt. Phys. 45, 165301 (2012). (arXiv:1208.4984)
  • Kirsten Stiebler, Bettina Gertjerenken, Niklas Teichmann, and Christoph Weiss:
    Spatial two-particle NOON-states in periodically shaken three-well potentials,
    J. Phys. B: At. Mol. Opt. Phys. 44, 055301 (2011). (arXiv:1102.4244)
  • Bettina Gertjerenken, Stephan Arlinghaus, Niklas Teichmann, and Christoph Weiss:
    Reproducible mesoscopic superpositions of Bose-Einstein condensates and mean-field chaos,
    Phys. Rev. A 82, 023620 (2010). (arXiv:1008.0314)
  • M. Gibert, H. Pabiou, J.-C. Tisserand, B. Gertjerenken, B. Castaing, and F. Chillà:
    Heat convection in a vertical channel: Plumes versus turbulent diffusion,
    Physics of Fluids 21, 035109 (2009).

Talks

  • Nonlocal quantum superpositions via scattering of bright solitons,
    ECT* workshop "Many-body Open Quantum Systems: From Atomic Nuclei to Quantum Optics", September 2012, Trento.
  • Interference patterns of cat states in ultracold atoms,
    Spring Meeting of the DPG in March 2012, Stuttgart.
  • Nonlocal quantum superposition states via scattering of a bright quantum matter wave soliton,
    Spring Meeting of the DPG in March 2011, Dresden.

Posters

  • Bettina Gertjerenken, Stephan Arlinghaus, Niklas Teichmann and Christoph Weiss:
    Deviations from Gross-Pitaevskii dynamics for Bose-Einstein condensates in double-well potentials,
    Spring Meeting of the DPG in March 2012, Stuttgart.
  • Bettina Gertjerenken, and Christoph Weiss:
    Creation of nonlocal quantum superposition states by scattering of a bright quantum matter wave soliton,
    Workskop on: Many-Body Quantum Dynamics in Closed Systems, September 2011, Barcelona.
  • Martin Esmann, Kirsten Stiebler, Bettina Gertjerenken, Niklas Teichmann, and Christoph Weiss:
    Quantum dynamics of few ultra-cold atoms in a periodically shaken optical superlattice,
    Spring Meeting of the DPG in March 2011, Dresden.
  • Bettina Gertjerenken, Stephan Arlinghaus, Niklas Teichmann, and Christoph Weiss:
    Reproducible mesoscopic superpositions of Bose-Einstein condensates and mean-field chaos,
    Workshop 'Quo Vadis Bose-Einstein condensation' in August 2010, Dresden.
  • Martin Esmann, Kirsten Stiebler, Bettina Gertjerenken, Niklas Teichmann, and Christoph Weiss:
    Transport via fractional photon-assisted tunneling for BECs in a double well,
    Spring Meeting of the DPG in March 2010, Hannover.
  • Bettina Gertjerenken, Stephan Arlinghaus, Niklas Teichmann , and Christoph Weiss:
    Reproducible chaos-induced mesoscopic superpositions of Bose-Einstein condensates,
    Spring Meeting of the DPG in March 2010, Hannover.
  • Bettina Gertjerenken, Stephan Arlinghaus, Niklas Teichmann , and Christoph Weiss:
    Emergence of mesoscopic entanglement for a bosonic Josephson junction,
    Spring Meeting of the DPG in March 2009, Hamburg.
  • Stephan Arlinghaus, Bettina Gertjerenken, Christoph Weiss and Martin Holthaus:
    Non-adiabatic effects in a shaken bosonic Josephson junction,
    Spring Meeting of the DPG in March 2009, Hamburg.

Diploma Thesis

  • Bose-Einstein-Kondensate in angetriebenen Doppelmuldenpotentialen: Adiabasieverlust und Verschränkung
    (Oldenburg, Mai 2009, supervisor: PD Dr. C. Weiß, Prof. Dr. M. Holthaus)

PhD Thesis

  • Many-body dynamics of ultra-cold atoms: from the correspondence principle to quantum superposition states
    (Oldenburg, April 2013, supervisor: PD Dr. C. Weiß, Prof. Dr. M. Holthaus)

Tutorials

  • Solid State Physics (Prof. Dr. G.H. Bauer, summer semester 07)
  • Solid State Physics (Prof. Dr. G.H. Bauer, winter semester 09/10)
  • Introduction to Theoretical Physics (Prof. Dr. M. Holthaus, summer semester 11)
  • Classical fields and particles I (Prof. Dr. M. Holthaus, winter semester 12/13)
  • Quantum mechanics (Prof. Dr. M. Holthaus, summer semester 13)
  • Introduction to Theoretical Physics (Prof. Dr. A. Hartmann, summer semester 14)

Curriculum Vitae

Since 08/2014 Visiting postdoctoral researcher at the University of Massachusetts in the group of Prof. Dr. P. G. Kevrekidis.
04/2013-08/2014 Postdoctoral researcher at the University of Oldenburg in the 'Condensed Matter Theory' group of Prof. Dr. M. Holthaus.
2009-2013 Ph.D. student and teaching assistant at the University of Oldenburg in the 'Condensed Matter Theory' group of Prof. Dr. M. Holthaus (supervisor: PD Dr. C. Weiss).
2008 - 2009 Diploma-student at the University of Oldenburg in the 'Condensed Matter Theory' group
of Prof. Dr. M. Holthaus.
July-December 2007 Student of Physics at the University of Auckland, New Zealand. Laboratory project in 'The Quantum Chaos Group' in the ultracold atoms laboratory of Dr. M. Hoogerland.
September/October 2006 Laboratory project at the 'École Normale Superieur de Lyon', France, in the group 'Nonlinear dynamics and hydrodynamics'.
2003 - 2009 Student of physics at the University of Oldenburg.
in 2003 Abitur at the 'Altes Gymnasium Oldenburg'.