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Nick Blunt

@nickblunt.bsky.social
155 followers 104 following 5 posts

Staff quantum scientist at Riverlane. Quantum computing, QMC and electronic structure theory.

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Reposted by Nick Blunt
Novo Nordisk Foundation Quantum Computing Programme (NQCP) @nqcp-nbi.bsky.social · 05/05/2026
Check out our preprint on quantum simulation of nanographenes, Trotter error cancellation and how to exploit this error cancellation to efficiently calculate energy differences between low-lying electronic eigenstates. arxiv.org/abs/2605.00745 In collaboration with researches at @riverlane.com
arxiv.org
Quantum simulation of nanographenes and Trotter error cancellation
Fault-tolerant quantum computing is a promising tool for simulating molecules and materials, but frequently-considered applications require substantial resources, and the gap between hardware capabili...
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Nick Blunt @nickblunt.bsky.social · 05/05/2026
In a new paper with @abaysmidt.bsky.social and @nqcp-nbi.bsky.social, we propose quantum simulation of nanographenes as an application to bridge early and later fault-tolerant quantum computing and study Trotter errors. scirate.com/arxiv/2605.0...
scirate.com
Quantum simulation of nanographenes and Trotter error cancellation
Fault-tolerant quantum computing is a promising tool for simulating molecules and materials, but frequently-considered applications require substantial resources, and the gap between hardware capabili...
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Reposted by Nick Blunt
David Byfield @davidbyfield.bsky.social · 05/03/2026
Super nice result from my colleagues @marklt.bsky.social @riverlane.com showing the NP-hard-ness of min-weight colour code decoding! scirate.com/arxiv/2603.0... 🧠
scirate.com
Minimum Weight Decoding in the Colour Code is NP-hard
All utility-scale quantum computers will require some form of Quantum Error Correction in which logical qubits are encoded in a larger number of physical qubits. One promising encoding is known as the...
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Reposted by Nick Blunt
Riverlane @riverlane.com · 30/01/2026
🎉 It's publication day! 🎉 Congrats to the team for a new @prxquantum.bsky.social paper where their 'ghost protocol' speeds up QEC cycle speeds 10x for AMO qubits 👻 journals.aps.org/prxquantum/a... 👏 Mark Turner, @quantumearl.bsky.social, Ophelia Crawford, Neil Gillespie, and Joan Camps
journals.aps.org
Scalable Decoding Protocols for Fast Transversal Logic in the Surface Code
A scalable decoding protocol enables fast logic with AMO qubits.
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Nick Blunt @nickblunt.bsky.social · 14/10/2025
In a new paper today with @aleksei-quantum.bsky.social and @abaysmidt.bsky.social, we demonstrate a practical numerical approach to provide tight bounds on Trotter error. scirate.com/arxiv/2510.1...
scirate.com
A Monte Carlo approach to bound Trotter error
Trotter product formulas are a natural and powerful approach to perform quantum simulation. However, the error analysis of product formulas is challenging, and their cost is often overestimated. It is...
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Reposted by Nick Blunt
Zhenyu Cai @zhenyucai.bsky.social · 08/08/2025
Our research group is seeking a talented and motivated Postdoctoral Researcher to join us in advancing the practical realisation of quantum technologies (including quantum error correction and mitigation). The deadline is 06 October 2025: tinyurl.com/bdhf3hzt
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Reposted by Nick Blunt
Riverlane @riverlane.com · 17/09/2025
🎉 Riverlane just dropped Deltakit! 🎉 This comprehensive platform for mastering #quantumerrorcorrection includes an SDK + textbook with practical examples, letting you dive into a library of codes, decoders, noise models + #QEC experiments. Get started at deltakit.riverlane.com
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Reposted by Nick Blunt
Riverlane @riverlane.com · 15/09/2025
👏 Well done to @nickblunt.bsky.social, @abaysmidt.bsky.social et al for a new @prxquantum.bsky.social paper on 'Tile Trotterization', bringing us closer to simulating superconductors and other states of matter: journals.aps.org/prxquantum/a... 🧵1/2 #QEC
journals.aps.org
Fault-Tolerant Quantum Simulation of Generalized Hubbard Models
Tile Trotterization is developed as an efficient method to simulate arbitrary lattice Hubbard and extended Hubbard models in early fault tolerance, and numerical methods are applied to more accurately...
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Reposted by Nick Blunt
David Byfield @davidbyfield.bsky.social · 28/07/2025
New paper! ✨ scirate.com/arxiv/2507.1... ✨ We present a new family of qLDPC codes that beat the rotated planar code while only requiring square-grid (or even hex-grid!) connectivity. 1/3
scirate.com
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Reposted by Nick Blunt
Riverlane @riverlane.com · 30/05/2025
👻 We ain’t afraid of no ghost! A new #arXiv paper from our team proposes the 'ghost protocol’ to enable AMO qubits to catch up with superconducting qubits, which lag in #QEC cycle speeds. It addresses the challenges of scalable #QuantumErrorCorrection in the context of fast transversal logic👇🧪
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Reposted by Nick Blunt
Earl Campbell @quantumearl.bsky.social · 24/05/2025
We have an open rolling advert for QEC researchers at Riverlane. And now also have a single post to fill for an (error-corrected) algorithms researcher apply.workable.com/riverlane/j/...
apply.workable.com
Quantum Algorithms Researcher - Riverlane
Cambridge, UK | Full-time or Part-time | Permanent | HybridSalary: £55,000 to £80,000 DOEThe salary range for this role is broad as we are able to consider varying levels of experience.  Any offe...
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Reposted by Nick Blunt
Riverlane @riverlane.com · 09/05/2025
👋 Hello BlueSky! 🧪 Riverlane is a team of #QuantumErrorCorrection (QEC) experts, helping quantum computers scale and tackle errors across all qubit types. Find out more about our work here: www.riverlane.com 🧵[1/2]
riverlane.com
Building the error correction stack for quantum computing
Riverlane's mission is to make quantum computing useful far sooner than previously imaginable, starting an era of human progress as significant as the industrial and digital revolutions.
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