Correlated Dynamics in a Synthetic Lattice of Momentum States

Fangzhao Alex An, Eric J. Meier, Jackson Ang'Ong'A, Bryce Gadway

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Article number040407
JournalPhysical review letters
Issue number4
StatePublished - Jan 25 2018

ASJC Scopus subject areas

  • General Physics and Astronomy


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