Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 68: Matter Wave Optics I

Q 68.5: Vortrag

Freitag, 27. März 2015, 12:15–12:30, K/HS2

Matter-wave interferometry with complex bionanomatter — •Philipp Geyer, Nadine Dörre, Jonas Rodewald, Philipp Haslinger, and Markus Arndt — Faculty of Physics, University of Vienna, Wien, Austria

We present recent results of Talbot-Lau interferometer with pulsed photodepletion gratings (OTIMA interferometry) and advances towards its combination with complex biomolecules. The interferometer uses three VUV laser light waves at 157 nm that are retro reflected on a single mirror to create three pulsed (7 ns) gratings[1]. The energy of each single photon suffices to ionize[2] or fragment[3] the particles that pass through the antinodes, while particles traveling through the nodes remain intact and in the beam. This way we obtain absorptive gratings that are precisely defined in time and space[4, 5]. They work independent of any particular electronic resonance in particles and avoid dispersive dephasing by van der Waals interactions that is often encountered in interaction with mechanical masks. We have performed interference experiments with various small biomolecular nanoparticles from vanillin to caffeine clusters and present new particle sources that will enable us to explore quantum interference assisted metrology on complex bio-molecules such as amino acids and large peptides.

1. Reiger E, et al. Opt Commun 2006, 264(2): 326-332.

2. Haslinger P, Geyer P, et al. Nature Physics 2013, 9: 144*148.

3. Dörre N, Geyer P, et al. Phys Rev Lett 2014.

4. Hornberger K, et al. Rev Mod Phys 2012, 84(1): 157-173.

5. Nimmrichter S, et al. New J Phys 2011, 13(7): 075002.