Single-qubit rotation algorithm with logarithmic Toffoli count and gate depth

Fuente: arXiv
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Autores principales: Hindlycke, Christoffer, Larsson, Jan-Åke
Formato: Preprint
Publicado: 2024
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author Hindlycke, Christoffer
Larsson, Jan-Åke
author_facet Hindlycke, Christoffer
Larsson, Jan-Åke
contents We propose a direct (non-recursive) algorithm for applying a rotation $R_{θ^\ast}$, $ε$-close to a desired rotation $R_θ$, to a single qubit using the Clifford+Toffoli gate set. Our algorithm does not rely on repeatedly applying a fixed rotation, but immediately applies $R_{θ^\ast}$. It succeeds with probability strictly greater than $1/2$, has an expected number of repetitions strictly less than 2, expected Toffoli count logarithmic in $\tfrac{1}ε$, and expected gate depth also logarithmic in $\tfrac{1}ε$.
format Preprint
id arxiv_https___arxiv_org_abs_2404_05618
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Single-qubit rotation algorithm with logarithmic Toffoli count and gate depth
Hindlycke, Christoffer
Larsson, Jan-Åke
Quantum Physics
We propose a direct (non-recursive) algorithm for applying a rotation $R_{θ^\ast}$, $ε$-close to a desired rotation $R_θ$, to a single qubit using the Clifford+Toffoli gate set. Our algorithm does not rely on repeatedly applying a fixed rotation, but immediately applies $R_{θ^\ast}$. It succeeds with probability strictly greater than $1/2$, has an expected number of repetitions strictly less than 2, expected Toffoli count logarithmic in $\tfrac{1}ε$, and expected gate depth also logarithmic in $\tfrac{1}ε$.
title Single-qubit rotation algorithm with logarithmic Toffoli count and gate depth
topic Quantum Physics
url https://arxiv.org/abs/2404.05618