Lightnews — Scholar-powered news

Nick Blunt @nickblunt.bsky.social · 1d

Although commutators bounds are known, these are challenging to evaluate accurately. We show that this can be achieved with Monte Carlo methods in a scalable manner, for a range of physically-relevant Hamiltonians.

Work done at @riverlane.com and @nqcp-nbi.bsky.social.

2

Nick Blunt @nickblunt.bsky.social · 1d

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...

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...

scirate.com

1 3 8

Reposted by Nick Blunt

Zhenyu Cai @zhenyucai.bsky.social · Aug 8

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

1 3 7

Reposted by Nick Blunt

Riverlane @riverlane.com · 28d

🎉 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

2 6

Reposted by Nick Blunt

Riverlane @riverlane.com · Sep 15

👏 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

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...

journals.aps.org

1 3 6

Reposted by Nick Blunt

David Byfield @davidbyfield.bsky.social · Jul 28

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

1 1 11

Reposted by Nick Blunt

Riverlane @riverlane.com · May 30

👻 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👇🧪

arxiv quant-ph @arxiv-quant-ph.bsky.social · May 30

Mark L. Turner, Earl T. Campbell, Ophelia Crawford, Neil I. Gillespie, Joan Camps
Scalable decoding protocols for fast transversal logic in the surface code
https://arxiv.org/abs/2505.23567

1 3 7

Reposted by Nick Blunt

Earl Campbell @quantumearl.bsky.social · May 24

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/...

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...

apply.workable.com

5 9

Reposted by Nick Blunt

Riverlane @riverlane.com · May 9

👋 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]

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.

www.riverlane.com

1 2 8