Matterwave Interferomtery using BEC

Contact Person(s):
Dr. Wolf von Klitzing
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We are constructing a coherently guided matter-wave interferometer. Our matter-waves will be made from Bose-Einstein Condensates (BEC). The interferometer will consist of a novel magnetic ring-shaped wavedguide based on time-averaged adiabatic potentials (TAAP). This project is part of the Marie-Curie Initial Training Network QTea

 PhD Scholarships available!



Research Topics
BEC and Matter Waves


The time-averaged adiabatic potentials (TAAP) allow a far wider range of trapping shapes than the traditional purely magnetic or even than the adiabatic potentials.  Most notably, one can create a ring shaped wave guide, which is ideal for a Sagnac-type matter-wave interferometer.

We achieved the first BEC in South Eastern Europe on Friday the 13th of August 2010, one week later we produced our first TAAP trap.  


15/09/2013 Hector Mas has joined us for an internship -- welcome Hector!
19/06/2013 Saurabh Pandey has joined our team.
17/12/2012 The Editorial Board of Journal of Physics B has selected our paper on the new BEC2 trap as a Highlight of 2012 (cold matter).(broshure)

Figure: 1 μK isopotential surfaces of possible TAAP traps. A movie of a transforming TAAP-trap can be seen here.


  • Focus on modern frontiers of matter wave optics and interferometry
    M. Arndt, A. Ekers, W. von Klitzing, and H. Ulbricht , New Journal of Physics, 14 125006, 2012

  • Ultra-sensitive atom imaging for matter-wave optics
    M. Pappa, P. C. Condylis, G. O. Konstantinidis, V. Bolpasi, A. Lazoudis, O. Morizot, D. Sahagun, M. Baker, and W. von Klitzing, New Journal of Physics, 13:11 115012, 2011

  • Double-pass tapered amplifier diode laser with an output power of 1 W for an injection power of only 200 micro Watt
    V. Bolpasi and W. von Klitzing, Review of Scientific Instruments, 81: 113108, 2010

  • Time-averaged adiabatic potentials: Versatile matter-wave guides and atom traps
    I. Lesanovsky and W. von Klitzing, Physical Review Letters, 99, 083001, 2007

  • Spontaneous emergence of angular momentum Josephson oscillations in coupled annular Bose-Einstein condensates
    I. Lesanovsky and W. von Klitzing, Physical Review Letters, 98, 050401, 2007

Project Members
Dr. Wolf von Klitzing

Last Updated:  17/10/2013