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Trapped Ion Quantum Computing

Comparing optical-microwave conversion and all-microwave control schemes for a transmon qubit

arXiv
Authors: Volodymyr Monarkha, Massimo Borrelli, Reza Hajitashakkori Kenari, Mohammad Kobba, Eugenio Cataldo, Beer de Zoeten, Mahnaz Zarrinfar, Kamal Pandey, Abhinand Pusuluri, Filippo D. Michelacci, Eliot Jouan, Bennett Sprague, Simon Groeblacher, Thierry C. van Thiel, Robert Stockill, Russell E. Lake

Year

2026

Paper ID

30558

Status

Preprint

Abstract Read

~2 min

Abstract Words

112

Citations

N/A

Abstract

We report a comparative study on transmon qubit control using (i) conventional attenuated coaxial microwave line and (ii) an optical control system using modulated laser light delivered over telecommunications optical fiber to a photodiode located at the 1K stage of a dilution cryostat. During each experiment, we performed repeated measurements of the energy relaxation and coherence times of a transmon qubit using one of the control signal delivery methods. Each measurement run spanned 20 hours of measurement time and from these datasets we observe no measurable effect on coherence of the qubit compared to random coherence fluctuations. Our results open up the possibility of large scale integration of the optical qubit control system.

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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 report a comparative study on transmon qubit control using (i) conventional attenuated coaxial microwave line and (ii) an optical control system using modulated laser light...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2603.18780 [2] arXiv https://arxiv.org/abs/2603.18780 [3] Publisher https://arxiv.org/abs/2603.18780

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