Výsledky vyhledávání - "Fläschner, N."

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Investigation of Feshbach Resonances in ultra-cold 40 K spin mixtures

Autor: Krauser, Jasper S., Heinze, Jannes, Götze, S., Langbecker, M., Fläschner, N., Cook, Liam, Hanna, Thomas. M., Tiesinga, Eite, Sengstock, Klaus, Becker, Christoph

Publikováno v: Phys. Rev. A 95, 042701 (2017)

Magnetically-tunable Feshbach resonances are an indispensable tool for experiments with atomic quantum gases. We report on twenty thus far unpublished Feshbach resonances and twenty one further probable Feshbach resonances in spin mixtures of ultraco

Externí odkaz: http://arxiv.org/abs/1701.02085

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Experimental reconstruction of the Berry curvature in a topological Bloch band

Autor: Fläschner, N., Rem, B. S., Tarnowski, M., Vogel, D., Lühmann, D. -S., Sengstock, K., Weitenberg, C.

Publikováno v: Science 352, 1091 (2016)

Topological properties lie at the heart of many fascinating phenomena in solid state systems such as quantum Hall systems or Chern insulators. The topology can be captured by the distribution of Berry curvature, which describes the geometry of the ei

Externí odkaz: http://arxiv.org/abs/1509.05763

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Intrinsic Photoconductivity of Ultracold Fermions in Optical Lattices

Autor: Heinze, J., Krauser, J. S., Fläschner, N., Hundt, B., Götze, S., Itin, A. P., Mathey, L., Sengstock, K., Becker, C.

Publikováno v: Phys. Rev. Lett. 110, 085302 (2013)

We report on the experimental observation of an analog to a persistent alternating photocurrent in an ultracold gas of fermionic atoms in an optical lattice. The dynamics is induced and sustained by an external harmonic confinement. While particles i

Externí odkaz: http://arxiv.org/abs/1208.4020

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Multi-band spectroscopy of ultracold fermions: Observation of reduced tunneling in attractive Bose-Fermi mixtures

Autor: Heinze, J., Götze, S., Krauser, J. S., Hundt, B., Fläschner, N., Lühmann, D. -S., Becker, C., Sengstock, K.

Publikováno v: Phys. Rev. Lett. 107, 135303 (2011)

We perform a detailed experimental study of the band excitations and tunneling properties of ultracold fermions in optical lattices. Employing a novel multi-band spectroscopy for fermionic atoms we can measure the full band structure and tunneling en

Externí odkaz: http://arxiv.org/abs/1107.2322

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