Alec Eickbusch

Happy to share my thesis, "Quantum Control and Error Correction of Grid States in a Superconducting Oscillator", is now online. Here's a direct link: bpb-us-w2.wpmucdn.com/campuspress.ya…

Congratulations Michel, John Clarke and John Martinis!

I had a great time back at Yale at #QEC25. Here’s a recording of my talk on our realization of below-threshold quantum error correction: yale.hosted.panopto.com/Panopto/Pages/…

Using time-dynamics, the surface code can be embedded on a hexagonal lattice rather than a square lattice. In our new paper, we show that these hex-grid circuits can still be adapted to broken qubits and couplers, despite their sparser connectivity: arxiv.org/abs/2508.08116.

Thrilled to share my PhD thesis is now public! 📖 📎 proquest.com/docview/322535… Aside from an introduction to quantum computing in CV and DV architectures, some unpublished ideas include:

Scientists have demonstrated that direct quantum info transfer is feasible at far lower transmission rates than previously thought — as low as 10% — with the help of GKP states. This work opens new possibilities for #quantum computing and communication. go.aps.org/4ceAxfT

Our paper that tells you how to make millisecond transmons just appeared. Congrats, Matthew, Faranak and team! In collaboration with Nathalie de Leon and Bob Cava, and building on five years of work in @C2QAdvantage arxiv.org/abs/2503.14798

Check out our newest manuscript on Experimentally Informed Decoding of Stabilizer Codes Based on Syndrome Correlations (arxiv.org/abs/2502.17722) which appeared on the @arxiv server today. In this work we discuss how we decode experimental error syndromes that are generated when executing the surface code with superconducting circuits. If you like the manuscript rate it on Scirate: scirate.com/arxiv/2502.177…. The work was done in a collaboration between @RWTH Aachen University, @fz_juelich, @IQ_USherbrooke at @USherbrooke, the @qudev lab at the @ETH_physics Department, member of the @ETHQuantumCntr and the @ETH_en Zürich - @psich_en Paul Scherrer Institut #Quantum Computing Hub by Ants Remm, @NathanLacroix, Lukas Bödeker, Elie Genois, Christoph Hellings, @FrancoisSwiadek, Graham J. Norris, @eichler__chris, @circuitqed , Markus Müller, @SebKrinner, and @AndreasAtETH with support from @IARPAnews and many more.

Thanks to my colleagues @mattjmcewen , @AlexisMorvan1 , and the rest of the Google Quantum AI team. Congrats to @NathanLacroix , Alex Bourassa, @KJSatz, and the rest of the team for the impressive color code results out today. It is a great year for experimental QEC!

Our results open the door to many new possibilities for QEC circuit design in hardware and software. This is one of two new preprints out by our team today, the second being a demonstration of the color code with logical operations, check it out here! - arxiv.org/abs/2412.14256

I'm happy to share one of two experimental quantum error correction preprints released today from our team at @GoogleQuantumAI , where we realize three time-dynamic implementations of the surface code! Check it out here: arxiv.org/abs/2412.14360

Check out our latest development from @GoogleQuantumAI, Willow!

Today we're introducing our new quantum chip, Willow! Willow is our first below-threshold quantum processor, which you can now read about in Nature t.ly/q7mVH. @KJSatz and I also wrote a blog about it t.ly/gEaQA. TLDR: QEC is blasting off. 🚀🚀🚀

Picture yourself with a chip made of qubits, with couplers between them for two-qubit gates. In scirate.com/arxiv/2410.148…, we outline a protocol called LUCI which adapts QEC circuits to chips where some of these components have been rendered non-functional.

Been working on "Magic state cultivation: growing T states as cheap as CNOT gates" all year. It's finally out: arxiv.org/abs/2409.17595 The reign of the T gate is coming to an end. It's now nearly the cost of a lattice surgery CNOT gate, and I bet there's more improvements yet.

@kyungjoo_noh Great to see bosonic codes concatenation in an experiment.

Very excited to share this result from AWS Center for Quantum Computing! arxiv.org/abs/2409.13025 Here we *experimentally demonstrate* repetition cat code, leveraging noise bias of cat qubits to reduce quantum error correction overhead.

Check out our latest preprint from @GoogleQuantumAI!