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Trapped Ion Quantum Computing Quantum Foundations

Robust Two-Qubit Geometric Phase Gates using Amplitude and Frequency Ramping

arXiv
Authors: Christina Bowers, Deviprasath Palani, John Barta, Tyler Guglielmo, Stephen Libby, Dietrich Leibfried, Daniel Slichter

Year

2025

Paper ID

16988

Status

Preprint

Abstract Read

~2 min

Abstract Words

98

Citations

N/A

Abstract

We demonstrate a method for generating entanglement between trapped atomic ions based on adiabatically ramped state-dependent forces. By ramping both the amplitude of the state-dependent force and the motional mode frequencies, we realize an entangling operation that is robust to motional mode occupation and drifts in the mode frequencies. We measure Bell state fidelities above 0.99 across a broad range of ramp parameters and with motional occupations up to 10 phonons. This technique enables high-fidelity entangling operations without ground-state cooling, has a reduced calibration overhead, and is well suited for both quantum logic spectroscopy applications and scalable quantum computing architectures.

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  • This paper contributes to the Quantum Foundations research area in the Quantum Articles archive.
  • It adds a 2025 reference point for readers tracking recent quantum research.
  • We demonstrate a method for generating entanglement between trapped atomic ions based on adiabatically ramped state-dependent forces.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2511.14364 [2] arXiv https://arxiv.org/abs/2511.14364 [3] Publisher https://arxiv.org/abs/2511.14364

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