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Trapped Ion Quantum Computing

Efficient preparation of Dicke states

arXiv
Authors: Jeffery Yu, Sean R. Muleady, Yu-Xin Wang, Nathan Schine, Alexey V. Gorshkov, Andrew M. Childs

Year

2024

Paper ID

37180

Status

Preprint

Abstract Read

~2 min

Abstract Words

85

Citations

N/A

Abstract

We present an algorithm utilizing mid-circuit measurement and feedback that prepares Dicke states with polylogarithmically many ancillas and polylogarithmic depth. Our algorithm uses only global mid-circuit projective measurements and adaptively-chosen global rotations. This improves over prior work that was only efficient for Dicke states of low weight, or was not efficient in both depth and width. Our algorithm can also naturally be implemented in a cavity QED context using polylogarithmic time, zero ancillas, and atom-photon coupling scaling with the square root of the system size.

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  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
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  • We present an algorithm utilizing mid-circuit measurement and feedback that prepares Dicke states with polylogarithmically many ancillas and polylogarithmic depth.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2411.03428 [2] arXiv https://arxiv.org/abs/2411.03428 [3] Publisher https://arxiv.org/abs/2411.03428

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