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Dark solitons in Bose-Einstein condensates
Summary form only given. One of the most striking aspects of Bose-Einstein condensates (BEC) of weakly interacting gases are the nonlinear properties of these systems. Of particular interest are…
Observation of phase fluctuations in elongated Bose-Einstein condensates.
Find pronounced phase fluctuations for condensates in very elongated traps in a broad temperature range and the dependence of their average value on temperature, number of particles, and the trapping potential is characterized.
Oscillations and interactions of dark and dark bright solitons in Bose Einstein condensates
Solitons are encountered in a wide range of nonlinear systems, from water channels to optical fibres. They have also been observed in Bose–Einstein condensates, but only now have such ‘ultracold…
Ultracold heteronuclear molecules in a 3D optical lattice.
- C. Ospelkaus, S. Ospelkaus, L. Humbert, P. Ernst, K. Sengstock, K. Bongs
- PhysicsPhysical review letters
- 23 July 2006
The efficiency of molecule creation via rf association is measured and is found to decrease as expected for more deeply bound molecules, and the binding energy of the heteronuclear molecules from rf spectroscopy across the Feshbach resonance is determined.
Quantum Simulation of Frustrated Classical Magnetism in Triangular Optical Lattices
This work presents the realization of a large-scale simulator for classical magnetism on a triangular lattice by exploiting the particular properties of a quantum system and provides a route to study highly debated phases like spin-liquids as well as the dynamics of quantum phase transitions.
Interaction-driven dynamics of 40K- 87Rb Fermion-Boson gas mixtures in the large-particle-number limit.
Part of the detailed study of the decay dynamics and mechanisms is a measurement of the three-body loss coefficient K3 = (2.8 +/- 1.1) x 10(-28) cm6/s, which is an important parameter for dynamical studies of the system.
Bose-Einstein Condensation in Microgravity
The preparation and observation of a Bose-Einstein condensate during free fall in a 146-meter-tall evacuated drop tower is reported and represents a promising source for matter-wave interferometry to test the universality of free fall with quantum matter.
Dynamics of F=2 spinor Bose-Einstein condensates.
The rich dynamics in F=2 spinor Bose-Einstein condensates of 87Rb are experimentally investigated and an interplay between mean-field driven spin dynamics and hyperfine-changing losses in addition to interactions with the thermal component is observed.
A high-flux BEC source for mobile atom interferometers
Quantum sensors based on coherent matter-waves are precise measurement devices whose ultimate accuracy is achieved with Bose–Einstein condensates (BECs) in extended free fall. This is ideally…
Multiphoton interband excitations of quantum gases in driven optical lattices
We report on the observation of multiphoton interband absorption processes for quantum gases in shaken light crystals. Periodic inertial forcing, induced by a spatial motion of the lattice potential,…