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21 papers
Prethermalization Revealed by the Relaxation Dynamics of Full Distribution Functions
David Adu Smith, Michael Gring, Tim Langen +7
We detail the experimental observation of the non-equilibrium many-body phenomenon prethermalization. We study the dynamics of a rapidly and coherently split one-dimensional Bose g…
Direct Measurement of the Zak phase in Topological Bloch Bands
Marcos Atala, Monika Aidelsburger, Julio T. Barreiro +4
Geometric phases that characterize the topological properties of Bloch bands play a fundamental role in the modern band theory of solids. Here we report on the direct measurement o…
Interferometric approach to measuring band topology in 2D optical lattices
Dmitry A. Abanin, Takuya Kitagawa, Immanuel Bloch +1
Recently, optical lattices with non-zero Berry's phases of Bloch bands have been realized. New approaches for measuring Berry's phases and topological properties of bands with expe…
Multimode dynamics and emergence of a characteristic length-scale in a one-dimensional quantum system
Maximilian Kuhnert, Remi Geiger, Tim Langen +6
We study the non-equilibrium dynamics of a coherently split one-dimensional (1d) Bose gas by measuring the full probability distribution functions of matter-wave interference. Obse…
Cooling through optimal control of quantum evolution
Armin Rahmani, Takuya Kitagawa, Eugene Demler +1
Nonadiabatic unitary evolution with tailored time-dependent Hamiltonians can prepare systems of cold atomic gases with various desired properties. For a system of two one-dimension…
Signatures of the superfluid to Mott insulator transition in equilibrium and in dynamical ramps
D. Pekker, B. Wunsch, T. Kitagawa +3
We investigate the equilibrium and dynamical properties of the Bose-Hubbard model and the related particle-hole symmetric spin-1 model in the vicinity of the superfluid to Mott ins…