Results 1 to 10 of about 1,582 (138)

Direct evidence of spatial stability of Bose-Einstein condensate of magnons [PDF]

Nature Communications, 2020
Little is known about the underlying mechanism responsible for the spatial stability of magnon Bose-Einstein condensates. Here experimental evidence is provided for a repulsive interaction of magnons in the condensate resulting in its stabilization.
I. V. Borisenko, B. Divinskiy, V. E. Demidov, G. Li, T. Nattermann, V. L. Pokrovsky, S. O. Demokritov   +6 more
doaj   +2 more sources

Atomic Bose–Einstein condensate in twisted-bilayer optical lattices [PDF]

Nature, 2021
Quantum simulation of superfluid to Mott insulator transition in twisted-bilayer square lattices based on atomic Bose–Einstein condensates loaded into spin-dependent optical lattices provides a new direction for exploring moiré physics in ultracold atoms.
Zengming Meng, Liang-Liang Wang, Weifang Han, Fangde Liu, K. Wen, Chao Gao, Pengjun Wang, C. Chin, Jing Zhang   +8 more
semanticscholar   +1 more source

Vortex formation in a stirred bose-einstein condensate [PDF]

Physical Review Letters, 1999
Using a focused laser beam we stir a Bose-Einstein condensate of 87Rb confined in a magnetic trap and observe the formation of a vortex for a stirring frequency exceeding a critical value.
Madison, Chevy, Wohlleben, Dalibard
semanticscholar   +1 more source

Analogue Gravitational Lensing in Bose-Einstein Condensates

Universe, 2023
We consider the propagation of phonons in the presence of a particle sink with radial flow in a Bose–Einstein condensate. Because the particle sink can be used to simulate a static acoustic black hole, the phonon would experience a considerable spacetime
Decheng Ma, Chenglong Jia, Enrique Solano, Lucas Chibebe Céleri   +3 more
doaj   +1 more source

Anderson localization of a non-interacting Bose–Einstein condensate [PDF]

Nature, 2008
Anderson localization of waves in disordered media was originally predicted fifty years ago, in the context of transport of electrons in crystals. The phenomenon is much more general and has been observed in a variety of systems, including light waves ...
G. Roati, C. D’Errico, L. Fallani, M. Fattori, C. Fort, M. Zaccanti, G. Modugno, M. Modugno, M. Inguscio   +8 more
semanticscholar   +1 more source

Kinetics of Strongly Nonequilibrium Magnon Gas Leading to Bose-Einstein Condensation [PDF]

Журнал нано- та електронної фізики, 2017
Kinetic equations describing nonequilibrium magnon gas under the action of parametric pumping are considered with an account of kinetic instability processes. These processes strongly influence condition of magnon Bose-Einstein condensate formation.
D.V. Slobodianiuk, O.V. Prokopenko
doaj   +1 more source

Vortices in a Bose Einstein condensate [PDF]

Quantum Electronics and Laser Science Conference, 1999
Summary form only given. Since the first observations of Bose Einstein condensates (BEC) in dilute atomic gases, there has been considerable interest in observing effects in atomic BEC akin to the hallmark effects associated with a superfluid, in ...
M. Matthews, B. Anderson, P. Haljan, D. Hall, C. Wieman, E. Cornell   +5 more
semanticscholar   +1 more source

Observation of fragmentation of a spinor Bose-Einstein condensate [PDF]

Science, 2020
Description Fragmenting the condensate In a Bose-Einstein condensate, a sizable fraction of particles occupies a single quantum state. In some systems, it is in principle possible to have more than one such macroscopically occupied state.
B. Evrard, A. Qu, J. Dalibard, F. Gerbier   +3 more
semanticscholar   +1 more source

The Bose-Einstein Condensate and Cold Atom Laboratory [PDF]

EPJ Quantum Technology, 2019
Microgravity eases several constraints limiting experiments with ultracold and condensed atoms on ground. It enables extended times of flight without suspension and eliminates the gravitational sag for trapped atoms.
Kai Frye, S. Abend, Wolfgang Bartosch, A. Bawamia, Dennis Becker, H. Blume, C. Braxmaier, S. Chiow, M. Efremov, W. Ertmer, P. Fierlinger, T. Franz, N. Gaaloul, J. Grosse, C. Grzeschik, O. Hellmig, V. Henderson, W. Herr, U. Israelsson, J. Kohel, M. Krutzik, C. Kürbis, C. Lämmerzahl, Meike List, D. Lüdtke, N. Lundblad, J. Marburger, M. Meister, Moritz Mihm, H. Müller, H. Müntinga, A. M. Nepal, T. Oberschulte, A. Papakonstantinou, Jaka Perovšek, A. Peters, A. Prat, E. Rasel, A. Roura, Matteo Sbroscia, W. Schleich, C. Schubert, S. Seidel, Jan Sommer, Christian Spindeldreier, D. Stamper-Kurn, B. Stuhl, M. Warner, T. Wendrich, A. Wenzlawski, A. Wicht, P. Windpassinger, N. Yu, L. Wörner   +53 more
semanticscholar   +1 more source

Controlled creation and decay of singly-quantized vortices in a polar magnetic phase

Communications Physics, 2021
Superfluid vortices are important in many diverse systems, including spinor Bose-Einstein condensates. Here, the experimental and theoretical analysis of the creation and time evolution of vortices in the polar phase of a spin-1 Bose-Einstein condensate ...
Y. Xiao, M. O. Borgh, L. S. Weiss, A. A. Blinova, J. Ruostekoski, D. S. Hall   +5 more
doaj   +1 more source