Bloch Oscillation Phases investigated by Multi-path Stuckelberg Atom Interferometry

• URL: http://arxiv.org/abs/2308.04134v1
• Date: Tue, 8 Aug 2023 08:48:05 GMT
• Title: Bloch Oscillation Phases investigated by Multi-path Stuckelberg Atom Interferometry
• Authors: Tahiyat Rahman, Anna Wirth-Singh, Andrew Ivanov, Daniel Gochnauer, Emmett Hough and Subhadeep Gupta
• Abstract summary: 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. We develop a multi-path Stuckelberg interferometer and investigate atomic phase evolution during BOs, up to 100 photon recoil momentum transfer.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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