Ben Barber

After 78 years, an exponential improvement for Ramsey numbers were found by Jie Ma, Wujie Shen, and Shengjie Xie. gilkalai.wordpress.com/2025/07/23/ama…

@siddhantphy Current opening at Riverlane: wrkbl.ink/aemVIXx

In ~7 months, I'll complete my Ph.D. at QuTech, TU Delft, where I’ve worked on quantum error correction for modular & distributed architectures with realistic hardware modeling. Seeking industry roles in quantum error correction & fault-tolerant architectures. Let’s connect!

The future of quantum computing depends on error correction, but there is still much to learn and more knowledge to share. That's why we are thrilled to welcome @lizdurst to Riverlane as our Vice President of QEC Community! 🎉 Liz is a highly regarded leader in the quantum computing industry, best known for building IBM Quantum’s Qiskit, the open-source software development kit that now dominates the quantum computing developer tools market. With over 600,000 users and adoption in 700+ universities, Qiskit has played a pivotal role in shaping the quantum workforce. Now, as quantum computing enters the quantum error correction (QEC) era, Liz will lead the development of a QEC software development kit along with learning resources to prepare the global quantum community for working with logical qubits and error-corrected systems. Quantum computing is evolving rapidly, and we believe there’s now a growing need to empower the next generation of learners and innovators. 💬 Liz shares: "I am passionate about empowering people worldwide to use and advance quantum computing. Having seen firsthand how thriving open-source ecosystems can drive progress, I look forward to working with Riverlane to accelerate the path to useful fault-tolerant quantum computers." 📢 Read more here: lnkd.in/eW5JQsDs #quantumcomputing #quantumerrorcorrection #qeccommunity

🤔What would a 'MegaQuOp' machine do? In collab with @uni_copenhagen, led by Andreas Juul Bay-Smidt, we've developed a method for quantum simulations of model systems in materials science and chemistry, and extended the potential use cases for early generations of fault-tolerant quantum computers. Learn more: scirate.com/arxiv/2501.103… #QuantumErrorCorrection | #MegaQuOp | #QECQuestion

Submissions for QEC 2025 are now open through March 28. This will easily be the most exciting conference on quantum error correction yet! Conference homepage: qec25.yalepages.org EasyChair submission page: easychair.org/my/conference?…

Special thanks to @Kenton12323 Barnes, I couldn't have done this without you.

First author Nature Electronics paper (alphabetically) nature.com/articles/s4192…

🎉 Riverlane's landmark quantum error correction (QEC) paper has been published in Nature Electronics 🎉 This publication recognizes the breakthrough made by our quantum decoder—the world's first dedicated 'QEC chip' implemented on ASIC and FPGA hardware. By uniquely balancing speed, accuracy, and resource efficiency, it set a new standard for quantum error correction when it was first published on arXiv in September 2023. 📖 Key highlights: • At its release, our novel Collision Clustering (CC) decoder was the most powerful in the world, and this paper was among the first to demonstrate that QEC could provide a viable route to fault-tolerant quantum computing. • Since then, the industry has rapidly embraced QEC, with companies like Google, Quantinuum, and QuEra also making significant QEC advancements. • The next big milestone? Using real-time QEC to achieve a 'MegaQuOp' (one million error-free quantum operations). This is where quantum computing's first practical use cases beyond the supercomputing threshold will begin to emerge. 🚀 Riverlane is leading the charge. Our Quantum Error Correction Stack (Deltaflow ™), the first comprehensive QEC solution for all quantum computers, will help our hardware partners transform their full-stack quantum computers into 'MegaQuop Machines'. With our second-generation QEC Stack (Deltaflow 2) launching this March, we're steadily advancing toward this critical goal. Today's publication in Nature Electronics is a proud moment. With QEC implementation now a top priority for every quantum computer and control system maker, we look forward to driving the continued progress of our QEC roadmap through 2025 and beyond. 🔗  Find out more in Nature Electronics here: lnkd.in/eGcCGKQK #quantumcomputing #quantumerrorcorrection #MegaQuOp

Now on the arXiv: a major step towards reaching one-million error-free quantum operations (aka the MegaQuOp) Riverlane’s Abbas Bracken Ziad  and Joan Camps et al present an FPGA implementation of our Local Clustering Decoder (LCD). This solution balances both the accuracy and speed required to create a real-time decoder, paving the way for the MegaQuOp. The LCD will be integrated in the latest version of Riverlane’s QEC Stack, Deltaflow 2. 👉 Abbas and Joan outline their work here: riverlane.com/news/getting-c… 👉 You can read the full paper here: arxiv.org/abs/2411.10343 @quantumcamps @noonfom

@sp_monte_carlo The modern proof uses the existence of idempotent ultrafilters in the Stone-Cech compactification of N, which can be proved in one lecture using only basic topology. 2/2

@sp_monte_carlo Hindman's theorem (for every finite colouring of the natural numbers there is an infinite subset S for which the sum of every non-empty finite subset of S is the same colour) was proved in a paper Hindman recommends reading only as penance. 1/2

@quantum_graeme @earltcampbell @jfitzsimons Here's one I snapped this morning.

It's getting pretty muddy and I'm trying to keep it nice for the holidays.

@Kenton12323 Just a little something for you in case you need to work on your opener.

@bbarber_ I did see this and wonder if it was you looking for more material

I remain available to get increasingly deranged about this over the course of an hour to an audience of your choice.

@earltcampbell Something something normaliser of the normaliser of the Pauli group.

@bbarber_ - Graph decoding versus hypergraph decoding - Just about any problem involving quDits and the Clifford group with D>2 - ...

@mpaldridge @sp_monte_carlo I'm not SAYING it's a conspiracy, I'm just saying there's something going on.

@sp_monte_carlo Trampling on @bbarber_’s field!

An informal, in person evening event at our Cambridge HQ for those curious to learn more about about Riverlane and quantum computing.

Never miss the meeting where they pick titles, that's my advice.

🚨 The Quantum Error Correction Report 2024 is 𝗛𝗘𝗥𝗘 🚨 Riverlane is proud to announce the release of our QEC Report in partnership with Resonance (@QuantumDaily )! This first-of-its-kind report provides critical insights into the quantum industry’s next phase—the 𝗤𝗘𝗖 𝗲𝗿𝗮—as we transition beyond the Noisy Intermediate-Scale Quantum (NISQ) era towards real-world quantum applications. See some key highlights below. 👇 Download the full report here: lnkd.in/eDMutzbB #quantumcomputing | #QEC | #quantumerrorcorrection | #TheQECReport2024