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Trapped Ion Quantum Computing

Demonstrating Record Fidelity for the Quantum Fourier Transform

arXiv
Authors: Philipp Aumann, Michael Fellner, David Alber, Max Cykiert, Christoph Fleckenstein, Roeland ter Hoeven, Leo Stenzel, Riccardo J. Valencia-Tortora, Wolfgang Lechner

Year

2026

Paper ID

48858

Status

Preprint

Abstract Read

~2 min

Abstract Words

96

Citations

N/A

Abstract

We demonstrate the Parity Architecture on quantum hardware, using the quantum Fourier transform (QFT) as a benchmark. As a result, a record performance in both fidelity and qubit count is achieved using quantum processors with a native CZ-based instruction set. On the IBM Heron r3 chip, a process fidelity of the QFT algorithm of {F approx 10-2} for {N=50} qubits is achieved. The scaling of the speedup compared to previous swap-based methods is super-exponential mathcal{O}\(exp(N2\)). Furthermore, we show that the scaling can be improved further by including iSWAP gates in the instruction set.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2026 reference point for readers tracking recent quantum research.
  • We demonstrate the Parity Architecture on quantum hardware, using the quantum Fourier transform (QFT) as a benchmark.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2604.12465 [2] arXiv https://arxiv.org/abs/2604.12465 [3] Publisher https://arxiv.org/abs/2604.12465

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