shouldn't post this late - reposted with typo fixed

New paper dance!
arxiv.org/abs/2604.16162
Long time in the making but worth the wait for extending our framework for physical computing to control systems.

New paper dance!
httos://arxiv.org/abs/2604.16162
Long time in the making but worth the wait for extending our framework for physical computing to control systems.

"Figure 6: Final fidelity of the final position states between errorless and simulated error 1q-coin (circles) and 2q-coin (triangles) QWs on 2n-node rings, using native gate set G(max(r) = 3). Pink solid lines denote QWs on 4-node rings, dashed blue on 8-node rings, and dotted gold lines on 16-node rings. IBM results (using native gates of max(r) = 2) [15] for 1q-coin QWs are also shown for comparison in crosses." Figure shows that 1q-coin QW on 4-node ring has final state fidelity >0.9 for 21 steps; 2q-coin (lazy) QW on 4-node and 1q-coin QW on 8-node has fidelity >0.9 for 10 steps and >0.8 for 20 steps; 2q-coin QW on 8-node and 1q-coin QW on 16-node has >0.9 for 5 steps, >0.8 for 8 steps, and >0.5 for 21 steps; lastly 2q-coin QW on 16-node >0.9 for 2 steps, >0.8 for 4 steps, and >0.5 for 10 steps. In all cases this is a marked improved over IBM results.

"Figure 9: Mean increase in composite fidelity f (max(r)) = Product^{max(r)−1}_{k=2} F(CkZ)^{no. of CkZ} from using native gate set G(max(r)) compared to using gate set G(max(r) − 1), with the number of multiqubit gates required for one step of a 2q-coin QW on a 2^n-node ring, where n ∈ {6, 8, 10, 12} in blue dots, green crosses, gold pluses, and red circles respectively. Inset shows corresponding average composite fidelity." Figure shows f(max(r=3)) to f(max(r-4)) has average increase of 0.15, 0.15, 0.13, 0.09 for n ∈ {6, 8, 10, 12} respectively; f(max(r-1) to f(max(r)) for r ∈ {5,6,7} has average increase of <0.04 for each n. Inset shows average f over 3<=max(r)<=7 of 0.3<f<0.5, 0.4<f<0.6, 0.6<f<0.8, 0.7<f<0.9 for n ∈ {6, 8, 10, 12} respectively.

Lazy Quantum Walks with Native Multiqubit Gates: Quantum walks (QWs) as a benchmark for effective multiqubit gate fidelities; via detailed realistic error modelling for neutral atom hardware we pinpoint the native multiqubit gate sweet spot for standard & lazy discrete QWs. arxiv.org/abs/2511.21608

Iran war has already released a staggering amount of CO2 — and the destruction of schools, homes and buildings is the biggest source In a new analysis, researchers estimated direct, indirect and future greenhouse gas emissions that were created in the first two weeks of the Iran war, between Feb. 28 and March 14.

Iran war has already released a staggering amount of CO2 — and the destruction of schools, homes and buildings is the biggest source In a new analysis, researchers estimated direct, indirect and future greenhouse gas emissions that were created in the first two weeks of the Iran war, between Feb. 2

Just a little reminder - this is happening TOMORROW! See y'all there! @ucu.org.uk @ucucommons.org @sheffielducu.bsky.social @ducu.bsky.social @ducuuo.bsky.social @umucu.bsky.social @uculeft.bsky.social @unisoninhe.bsky.social @nasuwtnewcastle.bsky.social @ntyneside-nasuwt.bsky.social

New paper dance! Lara Janiurek's first PhD paper!
Updated to v2 and submitted to journal. Lays out the method for obtaining the continuum differential equation corresponding to the discrete quantum walk with decoherence, for applications to quantum algorithms.

Man on left of two screens showing title slide of talk on Quantum Heuristics, wood panelled wall behind

Harry Buhrman (Quantinuum & U Amsterdam) telling us about quantum heuristics and the process of scientific discovery at the Quantum Informatics cdt launch event in Edinburgh.

Efficient graph-diagonal characterization of noisy states distributed over quantum networks via Bell sampling Graph states are an important class of entangled states that serve as a key resource for distributed information processing and communication in quantum networks. In this work, we propose a protocol t...

New preprint from my group, another collaboration with the groups of David Elkouss and Akihito Soeda. Those guys are *good*, and so are my team, so this is a productive collaboration.
arxiv.org/abs/2512.06650
#quantumInternet #quantumcomputing

Texto de una página web titulado "Financing digital innovation ecosystems in the majority world: Challenges & Opportunities" (Financiamiento de ecosistemas de innovación digital en el mundo mayoritario: desafíos y oportunidades). El texto explica que existe un déficit de financiación pública para apoyar el desarrollo de las capacidades de infraestructura digital en el Sur Global, señalando que la parte de la Ayuda Oficial al Desarrollo (AOD) es insuficiente y que los gobiernos del Sur se enfrentan a crecientes cargas de deuda. Menciona la necesidad de mecanismos de financiación innovadores y apunta a los riesgos de desviación de la misión y erosión del valor público en mecanismos de financiación que carecen de suficientes salvaguardias, como señalan académicos como Mazzucato. La sesión se organiza como un panel de discusión que aborda dos preguntas principales: 1) Los marcos de financiación principales que han guiado la implementación de la CMSI (Cumbre Mundial sobre la Sociedad de la Información) desde 2005 y sus éxitos/fracasos, y 2) Las arquitecturas de financiación necesarias para futuros de innovación equitativos e inclusivos. Se proporcionan detalles del evento: Fecha: 15 de diciembre de 2025; Hora: 11:45 AM a 1:30 PM (hora de NY); Ubicación: Sala de Conferencias 9, Sede de la ONU; Organizado por: Global Digital Justice Forum, IT for Change y APC; y se indica como Híbrido TBC (A Confirmar).

Sistemas feministas de responsabilidad frente a la violencia de género facilitada por la tecnología

Este miércoles, 10 de diciembre 👇

www.apc.org/es/event/sis...

#ViolenciadeGenero #Tecnología #TFGBV

Male presenter in front of slide

Female presenter in front of slides

Male presenter in front of slide

Female presenter in front of slide

The ExCALIBUR/DRI session at #CIUK2025 is continuing with talks from current DRI projects. We have SCALE-UP, SHAREing, NFCS and CaSDaR on stage.

I pay these from my research grant for fixed term postdocs - it isn't viable any other way while adhering to basic EDI practices.

CIUK25 card

Our colleagues are part of two sessions this afternoon at #CIUK25:
- Overview of the NetworkPlus Programme
- From ExCALIBUR to DRI, linking the UK's compute programmes.

They're also at the stands for CAKE and ARCHER2-Cirrus. Come and say hello! edin.ac/4pR8dpL

Slide explaining in diagrams what different types of alloy are. Soeaker standing on right

Alloys explained ...

Exploring the thermodynamics of disordered materials with quantum computing A quantum annealer is employed to search for low energy states on complex energy landscapes of disordered materials.

#CIUK next talk from Hubert Naguszewski (Warwick) on numerical simulation of alloys. A hard problem to do well with Monte Carlo. Compare method with quantum annealing methods in www.science.org/doi/10.1126/...

(tech boys on stage are lovely but quite the contrast to @whpcanz.bsky.social breakfast ... go figure)

This article suggests the possibility of training AI on pre-existing proposals and their review reports, scores and related decisions. I.e. training them on a system which is known to preferentially award larger amounts of money to white men. What could possibly go wrong?

imagine, right, you're applying for a UK visa. our wages suck, bills are high, layoffs are ten a penny, & you find out you're down up to £20k minimum right from the off, alongside thousands and thousands in visa fees. who would find that remotely appealing? this is how you collapse entire industries

Jason left, Dominic right, large data projector screen with CIUK banner behind them

#CIUK day two kicked off with the @whpcanz.bsky.social breakfast, now Jason Nucciarone and Dominic Sloan-Murphy telling us about Ubuntu HPC

Weronika from @epcc.bsky.social kicks off the Understanding dRTP landscape breakout at #CIUK25, the first of several #DRI project breakouts and sessions this week. Led by CHARTERED, DisCouRSE and SCALE-UP the session is exploring dRTP roles and progression

large projected slide showing the Jupiter HPC spec card with banners in the CIUK logo either side, man in glasses bottom right talking about it

#CIUK kicked off in the main hall first with Paul Walker explaining how to use immersion cooling in data centres and now Crispen Keable (Eviden) telling us how Jupiter HPC was built

Conference stall with two Conputational Abilities Knowledge Exchange (CAKE) banners, flyers, pens, muga and a screen. A man in a blue jumper is arranging the pens on the table.

We are in the process of setting up our stall at #CIUK2025. Looking forward to discuss knowledge exchange in the #DRI community!

3 men facing a poster with lots of text on it and some diagrams

Posters are also good, break was busy with discussions. Asa explaining his joint work with @spacetimelassie.bsky.social on benchmarking @dwavequantum.bsky.social systems

Screen projected saying CoSeC with two people at a lectern preparing for a talk.

Getting going in the first session of the 5th CoSeC conference on day zero of #CIUK conference in Manchester ...

Had a great time at the #RISCVSummit 2025, thanks very much to @riscv.org.web.brid.gy for the invitation to give a keynote about #RISCV in #HPC, was an honour and I also very much enjoyed being a panelist at the #Google breakfast and presenting #HPC #RISCV updates during the member's day

New paper dance! With @jbennett107.bsky.social @quantumchancellor.bsky.social and Wolfgang Lechner
journals.aps.org/pra/abstract...

📢 The news is spreading! 📢
Save the date for #DurhamHPCDays26 — next year’s conference will take place from 15–19 June 2026 at @durham.ac.uk
More details coming soon — stay tuned!

Chris Richardson talks about the #DRI living benchmarks project at #hpc/ai advisory conference, collecting a curating a suite of benchmarks to help inform future procurements

A slide titled "Building intersectional common agendas" is displayed, featuring an image of two people presenting at the WSIS+20 Forum High-Level 2024. Text on the right states: "Voices from the Global South contributed to reimagining internet governance ahead of the 20-year review of the World Summit on the Information Society (WSIS)

What was the impact of the APC network over the past year?

Voices from the Global South contributed to reimaining internet governance ahead of the 20-year review of WSIS Process #WSIS20.

More in our Annual Report 👇

2024report.apc.org

#apc2024 #BuildingIntersectionalCommonAgendas

Coming out of social media hibernation to ask:

Are you interested in hosting a future QEC conf?

We are looking for detailed bids for QEC27 over the next month (provisional deadline 21st November). For more info: DM or email me.

QEC26 will be in Santa Barbara