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arXiv · 2308.04134

Bloch Oscillation Phases investigated by Multi-path Stuckelberg Atom Interferometry

Tahiyat Rahman·Anna Wirth-Singh·Andrew Ivanov·Daniel Gochnauer·Emmett Hough·Subhadeep Gupta
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Abstract

Atoms undergoing Bloch oscillations (BOs) in an accelerating optical lattice acquire momentum of two photon recoils per BO. This technique provides a large momentum transfer tool for atom optics, but its full exploitation for atom interferometric sensors requires experimental characterization of associated phases. Each BO involves a Landau-Zener crossing with multiple crossings inducing interference known as Stuckelberg interference. We develop a multi-path Stuckelberg interferometer and investigate atomic phase evolution during BOs, up to 100 photon recoil momentum transfer. We compare to numerically calculated single-particle Schrodinger evolution, demonstrate highly coherent BO sequences, and assess phase stability requirements for BO-enhanced precision interferometry in fundamental physics and sensing applications.

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Tahiyat Rahman, Anna Wirth-Singh, Andrew Ivanov, Daniel Gochnauer, Emmett Hough, Subhadeep Gupta. 2023-08-08. Bloch Oscillation Phases investigated by Multi-path Stuckelberg Atom Interferometry. https://doi.org/10.1103/physrevresearch.6.l022012

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