Ratchet Loading and Multi-Ensemble Operation in an Optical Lattice Clock

Fuente: arXiv

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Bibliographic Details
Main Authors:	Hassan, Youssef S., Kobayashi, Takumi, Bothwell, Tobias, Seigel, Jacob L., Hunt, Benjamin D., Beloy, Kyle, Gibble, Kurt, Grogan, Tanner, Ludlow, Andrew D.
Format:	Preprint
Published:	2024
Subjects:	Atomic Physics
Online Access:	Acceder al recurso
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author	Hassan, Youssef S. Kobayashi, Takumi Bothwell, Tobias Seigel, Jacob L. Hunt, Benjamin D. Beloy, Kyle Gibble, Kurt Grogan, Tanner Ludlow, Andrew D.
author_facet	Hassan, Youssef S. Kobayashi, Takumi Bothwell, Tobias Seigel, Jacob L. Hunt, Benjamin D. Beloy, Kyle Gibble, Kurt Grogan, Tanner Ludlow, Andrew D.
contents	We demonstrate programmable control over the spatial distribution of ultra-cold atoms confined in an optical lattice. The control is facilitated through a combination of spatial manipulation of the magneto-optical trap and atomic population shelving to a metastable state. We first employ the technique to load an extended (5 mm) atomic sample with uniform density in an optical lattice clock, reducing atomic interactions and realizing remarkable frequency homogeneity across the atomic cloud. We also prepare multiple spatially separated atomic ensembles and realize multi-ensemble clock operation within the standard one-dimensional (1D) optical lattice clock architecture. Leveraging this technique, we prepare two oppositely spin-polarized ensembles that are independently addressable, offering a platform for implementing spectroscopic protocols for enhanced tracking of local oscillator phase. Finally, we demonstrate a relative fractional frequency instability at one second of $2.4(1) \times10^{-17}$ between two ensembles, useful for characterization of intra-lattice differential systematics.
format	Preprint
id	arxiv_https___arxiv_org_abs_2405_20520
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Ratchet Loading and Multi-Ensemble Operation in an Optical Lattice Clock Hassan, Youssef S. Kobayashi, Takumi Bothwell, Tobias Seigel, Jacob L. Hunt, Benjamin D. Beloy, Kyle Gibble, Kurt Grogan, Tanner Ludlow, Andrew D. Atomic Physics We demonstrate programmable control over the spatial distribution of ultra-cold atoms confined in an optical lattice. The control is facilitated through a combination of spatial manipulation of the magneto-optical trap and atomic population shelving to a metastable state. We first employ the technique to load an extended (5 mm) atomic sample with uniform density in an optical lattice clock, reducing atomic interactions and realizing remarkable frequency homogeneity across the atomic cloud. We also prepare multiple spatially separated atomic ensembles and realize multi-ensemble clock operation within the standard one-dimensional (1D) optical lattice clock architecture. Leveraging this technique, we prepare two oppositely spin-polarized ensembles that are independently addressable, offering a platform for implementing spectroscopic protocols for enhanced tracking of local oscillator phase. Finally, we demonstrate a relative fractional frequency instability at one second of $2.4(1) \times10^{-17}$ between two ensembles, useful for characterization of intra-lattice differential systematics.
title	Ratchet Loading and Multi-Ensemble Operation in an Optical Lattice Clock
topic	Atomic Physics
url	https://arxiv.org/abs/2405.20520