Zobrazeno 1 - 10
of 178
pro vyhledávání: '"Hamner C"'
The realization of artificial gauge fields and spin-orbit coupling for ultra-cold quantum gases promises new insight into paradigm solid state systems. Here we experimentally probe the dispersion relation of a spin-orbit coupled Bose-Einstein condens
Externí odkaz:
http://arxiv.org/abs/1405.4048
Publikováno v:
Phys. Rev. Lett. 111, 264101 (2013)
We experimentally investigate the phase winding dynamics of a harmonically trapped two-component BEC subject to microwave induced Rabi oscillations between two pseudospin components. While the single particle dynamics can be explained by mapping the
Externí odkaz:
http://arxiv.org/abs/1306.6102
Autor:
Álvarez, A., Cuevas, J., Romero, F. R., Hamner, C., Chang, J. J., Engels, P., Kevrekidis, P. G., Frantzeskakis, D. J.
Publikováno v:
J. Phys. B: At., Mol. Opt. Phys. 46 (2013) 065302
In this work, we study the collision of an atomic dark-bright soliton, in a two-component Bose-Einstein condensate, with a Gaussian barrier or well. First, we present the results of an experiment, illustrating the classical particle phenomenology (tr
Externí odkaz:
http://arxiv.org/abs/1210.6408
Autor:
Yan, D., Chang, J. J., Hamner, C., Hoefer, M., Kevrekidis, P. G., Engels, P., Achilleos, V., Frantzeskakis, D. J., Cuevas, J.
Motivated by recent experimental results, we study beating dark-dark solitons as a prototypical coherent structure that emerges in two-component Bose-Einstein condensates. We showcase their connection to dark- bright solitons via SO(2) rotation, and
Externí odkaz:
http://arxiv.org/abs/1202.2777
Autor:
Yan, D., Chang, J. J., Hamner, C., Kevrekidis, P. G., Engels, P., Achilleos, V., Frantzeskakis, D. J., Carretero-Gonzalez, R., Schmelcher, P.
Publikováno v:
Phys. Rev. A 84 (2011) 053630
We present experimental results and a systematic theoretical analysis of dark-br ight soliton interactions and multiple-dark-bright soliton complexes in atomic t wo-component Bose-Einstein condensates. We study analytically the interactions b etween
Externí odkaz:
http://arxiv.org/abs/1104.4359
Dark-dark solitons and modulational instability in miscible, two-component Bose-Einstein condensates
Publikováno v:
Phys. Rev. A, 84, 041605(R) (2011)
We investigate the dynamics of two miscible superfluids experiencing fast counterflow in a narrow channel. The superfluids are formed by two distinguishable components of a trapped dilute-gas Bose-Einstein condensate (BEC). The onset of counterflow-i
Externí odkaz:
http://arxiv.org/abs/1007.4947
Autor:
Middelkamp, S., Chang, J. J., Hamner, C., Carretero-Gonzalez, R., Kevrekidis, P. G., Achilleos, V., Frantzeskakis, D. J., Schmelcher, P., Engels, P.
Publikováno v:
Phys. Lett. A 375 (2011) 642-646
We explore the stability and dynamics of dark-bright solitons in two-component elongated Bose-Einstein condensates by developing effective 1D vector equations as well as solving the corresponding 3D Gross-Pitaevskii equations. A strong dependence of
Externí odkaz:
http://arxiv.org/abs/1005.3789
Publikováno v:
Phys. Rev. Lett. 106, 065302 (2011)
The dynamics of two penetrating superfluids exhibit an intriguing variety of nonlinear effects. Using two distinguishable components of a Bose-Einstein condensate, we investigate the counterflow of two superfluids in a narrow channel. We present the
Externí odkaz:
http://arxiv.org/abs/1005.2610
Autor:
Fister, T. T., Nagle, K. P., Vila, F. D., Seidler, G. T., Hamner, C., Cross, J. O., Rehr, J. J.
We report measurements of the non-resonant inelastic x-ray scattering (NRIXS) from the O 1s orbitals in ice Ih, and also report calculations of the corresponding spectra for ice Ih and several other phases of water ice. We find that the intermediate-
Externí odkaz:
http://arxiv.org/abs/0801.1853
We report new measurements and calculations of the non-resonant inelastic x-ray scattering (NRIXS) from Mg and Al for a wide range of momentum transfers, q. Extended oscillations in the dynamic structure factor S(q,w) due to scattering from the 2p an
Externí odkaz:
http://arxiv.org/abs/cond-mat/0609328