Results 21 to 30 of about 2,411 (56)
New Journal of Physics, 2015 We report the observation of a universal behavior of ultracold quantum critical (QC) Bose gases trapped in a one-dimensional optical lattice. We extract the density probability distributions from the measured atomic density of the rubidium Bose gases ...
Qiang Zhu +5 more
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Decay of quantised vorticity by sound emission
, 2004 It is thought that in a quantum fluid sound generation is the ultimate sink of turbulent kinetic energy in the absence of any other dissipation mechanism near absolute zero. We show that a suitably trapped Bose-Einstein condensate provides a model system
B.V. Svistunov +19 more
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Asymmetric vortex solitons in nonlinear periodic lattices [PDF]
, 2004 We reveal the existence of asymmetric vortex solitons in ideally symmetric periodic lattices, and show how such nonlinear localized structures describing elementary circular flows can be analyzed systematically using the energy-balance relations.
Andrey A. Sukhorukov +5 more
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Many-body state engineering using measurements and fixed unitary dynamics
New Journal of Physics, 2014 We develop a scheme to prepare a desired state or subspace in high-dimensional Hilbert-spaces using repeated applications of a single static projection operator onto the desired target and fixed unitary dynamics. Benchmarks against other control schemes,
Mads Kock Pedersen +3 more
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Random phases in Bose-Einstein condensates with higher order nonlinearities
, 2005 We present a statistical description of Bose-Einstein condensates with general higher order nonlinearities. In particular, we investigate the case of cubic-quintic nonlinearities, of particular interest for dilute condensates.
65 +25 more
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New Journal of Physics, 2017 In this paper, we study a one-dimensional boson system in a superlattice potential. This system is experimentally feasible by using ultracold atomic gases, and attracts much attention these days.
Yoshihito Kuno +2 more
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Modulational instability criteria for two-component Bose-Einstein condensates
, 2005 The stability of colliding Bose-Einstein condensates is investigated. A set of coupled Gross-Pitaevskii equations is thus considered, and analyzed via a perturbative approach.
287 +11 more
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Synthetic topological Kondo insulator in a pumped optical cavity
New Journal of Physics, 2018 Motivated by experimental advances on ultracold atoms coupled to a pumped optical cavity, we propose a scheme for synthesizing and observing the Kondo insulator in Fermi gases trapped in optical lattices.
Zhen Zheng, Xu-Bo Zou, Guang-Can Guo
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Regulating atomic imbalance in double-well lattices
, 2009 An insulating optical lattice with double-well sites is considered. In the case of the unity filling factor, an effective Hamiltonian in the pseudospin representation is derived.
Abragam +26 more
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Strongly anomalous non-thermal fixed point in a quenched two-dimensional Bose gas
New Journal of Physics, 2017 Universal scaling behavior in the relaxation dynamics of an isolated two-dimensional Bose gas is studied by means of semi-classical stochastic simulations of the Gross–Pitaevskii model.
Markus Karl, Thomas Gasenzer
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