Injection spectroscopy of momentum state lattices

Sai Naga Manoj Paladugu, Tao Chen, Fangzhao Alex An, Bo Yan, Bryce Gadway

Research output: Contribution to journalArticlepeer-review


The energy spectrum of quantum systems contain a wealth of information about their underlying properties. Spectroscopic techniques, especially those with access to spatially resolved measurements, can be challenging to implement in real-space systems of cold atoms in optical lattices. Here we explore a technique for probing energy spectra in synthetic lattices that is analogous to scanning tunneling microscopy. Using one-dimensional synthetic lattices of coupled atomic momentum states, we explore this spectroscopic technique and observe qualitative agreement between the measured and simulated energy spectra for small two- and three-site lattices as well as a uniform many-site lattice. Finally, through simulations, we show that this technique should allow for the exploration of the topological bands and the fractal energy spectrum of the Hofstadter model as realized in synthetic lattices.

Original languageEnglish (US)
Article number39
JournalCommunications Physics
Issue number1
StatePublished - Dec 2024
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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