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作者:Logan W. Clark , Brandon M. Anderson ...
来源:[J].2018, Vol.121 (3), pp.030402临时来源数据库
摘要:We demonstrate a density-dependent gauge field, induced by atomic interactions, for quantum gases. The gauge field results from the synchronous coupling between the interactions and micromotion of the atoms in a modulated two-dimensional optical lattice. As a first step, we show ...
作者:Logan W. Clark , Jennifer Crawford ...
来源:[J].2017, Vol.118 (22), pp.220401临时来源数据库
摘要:We address band engineering in the presence of periodic driving by numerically shaking a lattice containing a bosonic condensate. By not restricting to simplified band structure models we are able to address arbitrary values of the shaking frequency, amplitude, and interacti...
作者:Logan W. Clark , Jiazhong Hu ...
来源:[J].2018, Vol.121 (24), pp.243001临时来源数据库
摘要:A Bose condensate, subject to periodic modulation of the two-body interactions, was recently observed to emit matter-wave jets resembling fireworks [Nature (London) 551, 356 (2017)]. In this Letter, combining experiment with numerical simulation, we demonstrate that these “B...
作者:Logan W. Clark , Li-Chung Ha ...
来源:[J].2015, Vol.115 (15), pp.155301临时来源数据库
摘要:Optical control of atomic interactions in quantum gases is a long-sought goal of cold atom research. Previous experiments have been hindered by rapid decay of the quantum gas and parasitic deformation of the trap potential. We develop and implement a generic scheme for optical co...
作者:Logan W. Clark , Colin V. Parker ...
来源:[J].2015, Vol.114 (5), pp.055301临时来源数据库
摘要:We present experimental evidence showing that an interacting Bose condensate in a shaken optical lattice develops a roton-maxon excitation spectrum, a feature normally associated with superfluid helium. The roton-maxon feature originates from the double-well dispersion in th...
作者:Tongtong Liu , Logan W. Clark , Cheng Chin
来源:[J].2016, Vol.94 (6), pp.063646临时来源数据库
摘要:We study the domain walls which form when Bose condensates acquire a double-well dispersion. Experiments have observed such domain walls in condensates driven across a Z2 symmetry-breaking phase transition in a shaken optical lattice. We derive a generic model to describe th...

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