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Trapped Ion Quantum Computing

A High-Contrast Bragg Atom Interferometer for Testing Continuous Spontaneous Localization

arXiv
Authors: Huaiyu Zhu, Ju Liu, Tao Zhang, Qin Luo, Zhongkun Hu, Minkang Zhou

Year

2026

Paper ID

68232

Status

Preprint

Abstract Read

~2 min

Abstract Words

118

Citations

N/A

Abstract

The continuous spontaneous localization (CSL) model is one of the most promising approaches to address the wave function collapse problem in the measurement process of standard quantum mechanics. In this work, the effect of the CSL model on a Bragg atom interferometer was investigated. A Bragg interferometer achieving high fringe contrast of 99\% has been demonstrated, maintaining this performance level at interrogation time up to T=60 ms. The primary factors responsible for fringe contrast loss in the atom interferometer were systematically analyzed and corrected. This improvement established a new upper limit of λrm CSL=1.27times10-5 s-1 at rC=10-5 m for the CSL collapse rate, representing approximately 4 times enhancement over previous atom-interferometric constraints.

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  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
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  • The continuous spontaneous localization (CSL) model is one of the most promising approaches to address the wave function collapse problem in the measurement process of standard...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2605.26860 [2] arXiv https://arxiv.org/abs/2605.26860 [3] Publisher https://arxiv.org/abs/2605.26860

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