Correlated Dynamics in a Synthetic Lattice of Momentum States

被引：71

作者：

An, Fangzhao Alex ^{[1
]}

Meier, Eric J. ^{[1
]}

Ang'ong'a, Jackson ^{[1
]}

Gadway, Bryce ^{[1
]}

机构：

[1] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 04期

关键词：

BOSE-EINSTEIN CONDENSATE; PHASE-TRANSITION; SPIN-EXCHANGE; NEUTRAL ATOMS; EDGE STATES; GAS; HYSTERESIS; SUPERFLUID; MODEL; LIMIT;

D O I：

10.1103/PhysRevLett.120.040407

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the influence of atomic interactions on quantum simulations in momentum-space lattices (MSLs), where driven transitions between discrete momentum states mimic transport between sites of a synthetic lattice. Low-energy atomic collisions, which are short ranged in real space, relate to nearly infinite-ranged interactions in momentum space. However, the added exchange energy between atoms in distinguishable momentum states leads to an effectively attractive, finite-ranged interaction between atoms in momentum space. In this Letter, we observe the onset of self-trapping driven by such interactions in a momentum-space double well, paving the way for more complex many-body studies in tailored MSLs. We consider the types of phenomena that may result from these interactions, including the formation of chiral solitons in zigzag flux lattices.

引用

页数：6

共 61 条

[1] Direct observation of tunneling and nonlinear self-trapping in a single bosonic Josephson junction -: art. no. 010402 [J].