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Quantum phases of dipolar bosons in optical lattices
K. Goral, L. Santos, M. Lewenstein
The ground state of dipolar bosons placed in an optical lattice is analyzed. We show that the modification of experimentally accessible parameters can lead to the realization and c…
Dynamics of dark solitons in elongated Bose-Einstein condensates
A. E. Muryshev, G. V. Shlyapnikov, W. Ertmer +2
We find two types of moving dark soliton textures in elongated Bose-Einstein condensates: non-stationary kinks and proper dark solitons. The former have a curved notch region and r…
Reflections upon separability and distillability
D. Bruss, J. I. Cirac, P. Horodecki +4
We present an abstract formulation of the so-called Innsbruck-Hannover programme that investigates quantum correlations and entanglement in terms of convex sets. We present a unifi…
Observation of Phase Fluctuations in Bose-Einstein Condensates
S. Dettmer, D. Hellweg, P. Ryytty +8
The occurrence of phase fluctuations due to thermal excitations in Bose-Einstein condensates (BECs) is studied for a variety of temperatures and trap geometries. We observe the sta…
Classification of mixed three-qubit states
A. Acin, D. Bruss, M. Lewenstein +1
We introduce a classification of mixed three-qubit states, in which we define the classes of separable, biseparable, W- and GHZ-states. These classes are successively embedded into…
Separability Properties of Three-mode Gaussian States
Geza Giedke, Barbara Kraus, Maciej Lewenstein +1
We derive a necessary and sufficient condition for the separability of tripartite three mode Gaussian states, that is easy to check for any such state. We give a classification of…