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Ross Duncan

@rossquantum.bsky.social
717 followers 396 following 269 posts

Quantum computing lifer. ZX-calculus co-inventor. Quantum compiler compiler and quantum programmer programmer. String diagrammer. Category theoriser. Senior Fellow @ Quantinuum (I cannot read DMs on Bluesky)

PostsRepliesMedia
Reposted by Ross Duncan
Graeme Smith @graemesmith.bsky.social · 28/09/2026
Shame on @qipconference.bsky.social for using X/twitter. You give our community a bad name.
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Dulwich Quantum Computing @dulwichquantum.bsky.social · 28/09/2026
"Good name is better than silver and gold. And no money, no money, no money, no money, no money can buy good name." -- William Onyeabor www.youtube.com/watch?v=27nC...
youtube.com
William Onyeabor – Good Name (Official Video)
YouTube video by Luaka Bop
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Clemens @gibtsdes.bsky.social · 18h
Hi #Edinburgh, your twin city #Kyiv is being bombed 24/7 and needs some attention. I know the bombing is not your fault, but silence can also be a crime. You were active when the full invasion started, but now interest seems to have waned?
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Ross Duncan @rossquantum.bsky.social · 25/09/2026
I was in Toronto for IEEE #Quantum Week / IWQC / QRE. Here me giving a talk about #guppylang at etc Quantum Software 2.6 workshop and with my co-panelists, Rafael Haenel, Roger Luo, Brad Chase, Sebastian Feld, and Mathys Rennela. #guppy #quantumcomputing guppylang.org
Ross Duncan giving a talk next to a giant picture of a fish.Six people standing in front of a desk
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comp_phys_marc @marcusedwards.me · 22/09/2026
I had the opportunity to attend the International Workshop on Quantum Compilation this past weekend at Xanadu headquarters in Toronto! #quantum #compiling #iwqc
The attendees of IWQC raising their hands The attendees of iwqcMarcus discussing with Dr. KissingerMarcus discussing with Raphael
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Ross Duncan @rossquantum.bsky.social · 17/09/2026
I'll be speaking at this, at 13:00. Can't promise it will be good, but I'd be happy to see you!
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Nirmalya Kajuri @kajunut.bsky.social · 13/09/2026
Deeply saddened to learn that Rafael Sorkin is no more. One of the deepest and most original thinkers of quantum gravity and the pioneer of causal set theory, he was also among the nicest, gentlest physicists I have met.
image of rafael sorkin
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Clément Canonne @ccanonne.github.io · 09/09/2026
For context, to ground the conversation and explain one of the issues. USD20M, which is a self-reported (likely low-balled) estimate of what OpenAI burned in *one week* in their scooping race, would fund 100 full-time postdoctoral positions for 2 years (including overhead). 100 postdocs. 2 years.
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Arnaud Spiwack @aspiwack.bsky.social · 10/09/2026
Indeed indeed. Et c'est pour ça que peut-être, on pourrait considérer laisser les gens habiter où ils veulent, non? Tous les gens. Dans n'importe quel pays. Plutôt que d'imposer des permis de résidence qui font qu'à tout moment une vie peut être bouleversée par une décision administrative.
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The Tennessee Holler @thetnholler.bsky.social · 29/08/2026
🇫🇷 FRANCE: “A photograph of Palestinian footballers playing on a makeshift pitch surrounded by the ruins of Gaza has been removed from a major sports photography exhibition in France following complaints from pro-Israel campaigners.” greatreporter.com/2026/08/25/e...
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Glyph @glyph.im · 30/08/2026
the social contract that allows the web to exist at all is literally collapsing in real time people.kernel.org/monsieuricon/cree…
people.kernel.org
Creepy crawlies
Comments
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Gro-Tsen @gro-tsen.bsky.social · 27/08/2026
Look, it's really simple: if its a work tool, your employer should pay for it, not you. Please don't contribute to normalizing “pay for your own work tools”.
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Ross Duncan @rossquantum.bsky.social · 27/08/2026
Conferences suck. Little workshops are much better. I like this idea: www.argmin.net/p/microconfe...
argmin.net
Microconferences
A proposal to create alternative systems for generating, evaluating, and sharing knowledge
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Reposted by Ross Duncan
mgualt.bsky.social @mgualt.bsky.social · 25/08/2026
A letter to the math community, to appear in the Notices. In response to what I view as irresponsible messaging and unfortunate decisions from some mathematical leaders influencing many in my department. www.math.toronto.edu/mgualt/math-...
math.toronto.edu
Mathematics and the LLM: 2026 – Coordinate Change
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Ross Duncan @rossquantum.bsky.social · 24/08/2026
Registration for IWQC 2026 has been extended to 31st August. If you want to hear about the state of the art of quantum compilers sign up while there is still space! It's happening at Xanadu HQ in Toronto 19 - 20 September. #iwqc #quantum #quantumcomputing quantum-compilers.github.io/iwqc2026/
quantum-compilers.github.io
8th International Workshop on Quantum Compilation
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Ross Duncan @rossquantum.bsky.social · 17/08/2026
Two weeks to go! Registration for IWQC 2026 is still open. If you like to compile software for your quantum computer you should probably go. Invited talks from Vadym Kliuchnikov and Aws Albarghouthi! At Xanadu HQ in Toronto 19 - 20 September. #iwqc #quantum quantum-compilers.github.io/iwqc2026/
quantum-compilers.github.io
8th International Workshop on Quantum Compilation
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Ross Duncan @rossquantum.bsky.social · 30/07/2026
Yet another job ad! We're looking for a software engineer to work on our open source Tierkreis workflow system (focussing on quantum-HPC hybrid integration). The job is based in Singapore. #quantumcomputing #jobad jobs.eu.lever.co/quantinuum/8...
jobs.eu.lever.co
Quantinuum - Advanced Software Engineer – Hybrid Quantum-HPC Orchestration - 860
We are seeking a talented and innovative Software Engineer/Developer to design and develop a hybrid workflow orchestrator between Quantinuum quantum processors and classical supercomputing resources i...
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Caroline Ball @heroicendeavour.eurosky.social · 29/07/2026
Reading articles on the amounts HE has spent in APCs over the last 5-10 years, and slowly watching my blood pressure rise. Millions upon millions, on something WE CAN ABSOLUTELY DO OURSELVES FOR A FRACTION OF THE COST - what universities couldn't do with that kind of money now... 😠 And breathe...
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Ross Duncan @rossquantum.bsky.social · 16/07/2026
We want to hire an Offering Manager for our Developer Platform. This means working out what developers need for doing quantum computing, and then making that happen. Experience in writing (quantum) software will help a lot. jobs.eu.lever.co/quantinuum/9... #jobad #quantum #quantumcomputing
jobs.eu.lever.co
Quantinuum - Sr. Director, Offering Management – Quantum Developer Platform - 836
We are seeking a Sr. Director, Offering Management to join our team in the London or Cambridge, UK offices. Lead the strategy and execution of a cloud-based quantum developer platform that enables dev...
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Ross Duncan @rossquantum.bsky.social · 10/07/2026
Last day to submit your contribution to the quantum compilers workshop! We want a 3--5 pages abstract describing your best compiling ideas! #quantum #quantumcomputing #compilers #iwqc2026 quantum-compilers.github.io/iwqc2026/
quantum-compilers.github.io
8th International Workshop on Quantum Compilation
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Astronomer Royal for Scotland | Catherine Heymans @astroroyalscot.bsky.social · 01/07/2026
At today's UKRI board meeting, the fate of UK particle physics and astronomy will likely be decided. Have we done enough to convince the powers-that-be to halt the proposed funding cuts? 🤞 Read Prof. Hiranya Peiris in Nature today eloquently explaining why these cuts are wrong.🧪🔭⚛️ 📖: rdcu.be/friwM
Restructuring research funding as a choice between discovery and application gets the economics wrong, the evidence wrong and the people wrong.

A premise is gaining traction in science policy on both sides of the Atlantic: that fundamental and applied research are competing claims on the same budget, and that the balance must shift towards application. In the USA, the current administration has proposed cuts of billions of dollars to the National Institutes of Health and the National Science Foundation. In the UK, the national funding agency UK Research and Innovation (UKRI) is restructuring its portfolio around government growth priorities, with curiosity-driven research nominally protected but the grant lines that actually fund investigators under severe pressure. The language varies — ‘doing fewer things better’, ‘aligning research with industrial strategy’ — but the underlying logic is the same. Fundamental science, the argument goes, is a luxury that becomes dispensable when budgets are tight. This premise is wrong, and the consequences of acting on it are already visible.
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Bob Coecke @coecke.bsky.social · 30/06/2026
Here's Relational Intelligence. rel-int.ai Why? Current LLMs are unexplainable, no path to efficiency, no path to scalability... How? The same structure governs quantum mechanics and natural language, and cognition more generally. We use this to build AI whose reasoning you can trust. When? Now!
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👻madeline bOoOoOoOodent👻 @oldenoughtosay.com · 25/06/2026
I’m British and this is the one American take on the discourse that I wholeheartedly approve this is the damn problem
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Ross Duncan @rossquantum.bsky.social · 22/06/2026
Monday morning respam of Friday afternoon's spam:
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Ross Duncan @rossquantum.bsky.social · 19/06/2026
Do you like compiling quantum software? Maybe you should send something to the 8th International Workshop on Quantum Compilation? The deadline is the 10th of July! Tell your friends! (Just the cool ones.) quantum-compilers.github.io/iwqc2026/ #quantum #compilers #quantumcomputing #iwqc2026
quantum-compilers.github.io
8th International Workshop on Quantum Compilation
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Ross Duncan @rossquantum.bsky.social · 18/06/2026
My first Nature paper! I had very little to do with it :-) www.nature.com/articles/s41...
nature.com
A 98-qubit trapped-ion quantum computer with all-to-all connectivity - Nature
A new quantum computer, Quantinuum Helios, which is a 98-qubit trapped-ion quantum processor built on the QCCD architecture, demonstrates performance well beyond classical capabilities and provides a ...
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Coleen Murphy @ctmurphy1.bsky.social · 17/06/2026
one anecdote: I was searching for a link to one of my old papers on Google, and the automated Gemini summary attributed all of my lab's work to my husband
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nate @loglog.wtf · 11/06/2026
this pattern is so silly. just put your damn artifacts online
screenshot from a paper that reads:

Data availability
The data from the experimental runs are available on request.
Code availability
The quantum circuits used in these experiments are available on
request.
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Kartik @k4rtik.bsky.social · 30/05/2026
Lightning talk submissions are open for the Quantum Software 2.6 workshop at IEEE Quantum Week in Toronto. Working on quantum software? We'd love to hear from you. Workshop: sites.google.com/view/quantum... Submit: forms.gle/fnSPSmERLSPq...
sites.google.com
Quantum Software 2.6 Workshop
Quantum Software 2.6: current challenges and headways in quantum software IEEE Quantum Week 2026 conference, Sept 13th - Sept 18th Metro Toronto Convention Center Toronto, Ontario, Canada
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María Gragera Garcés @grageragarces.github.io · 09/06/2026
It would be very nice if quantum circuit benchmarking suites like MQTBench came with expected results for the circuits in 0 noise environments so that we can test against them. It's easy enough for things like W or GHZ generators but I have no clue what your Grover implementation was converging on
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Josh Shepperd @joshshepperd.bsky.social · 28/05/2026
Do not let AI write for you.
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Ross Duncan @rossquantum.bsky.social · 22/05/2026
International Workshop on Quantum Compilation is accepting submissions. The workshop is in Toronto 19--20 September. #quantum #compilers #quantumcomputing #cfp quantum-compilers.github.io/iwqc2026/
quantum-compilers.github.io
8th International Workshop on Quantum Compilation
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Ross Duncan @rossquantum.bsky.social · 18/05/2026
Friend of the shop @johncarlosbaez.bsky.social will be at Sloan's tomorrow!
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Led By Donkeys @ledbydonkeys.org · 17/05/2026
Immigration make Britain brilliant
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Unitary Foundation @unitary.foundation · 11/05/2026
We're happy to announce our newest micrograntee - Aleks Kissinger! Aleks is a Professor of Quantum Computing in the Quantum group in Oxford Computer Science. He's received a microgrant to develop ZX Calculus Online. Learn more: unitary.foundation/grants/2026_...
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Dulwich Quantum Computing @dulwichquantum.bsky.social · 13/05/2026
Apparently German real estate company Quantum has successfully sued the Dutch national quantum computing initiative Quantum Delta NL for trademark infringement on their use of "quantum". blog.galalaw.com/post/102mp68... www.boek9.nl/system/files...
blog.galalaw.com
Use of ‘House of Quantum’ and ‘Quantum Delta NL’ infringes Quantum trademark (via Passle)
Quantum is a real estate specialist that develops and manages real estate projects and provides asset management services. Quantum carries out these act...
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Ross Floate @rossfloate.bsky.social · 08/05/2026
Oh my. This is spectacular. sinceyouarrived.world/taken
sinceyouarrived.world
taken.
A web page that tells you what your browser gave away the moment you arrived. No login, no form, no permission. Most pages do this. None of them tell you.
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John C. Baez @johncarlosbaez.bsky.social · 05/05/2026
Now, for Chrome users: a 4 gigabyte LLM sneaks onto your computer whether you ask for it or not! It's possible to remove it, but hard to keep it out. www.thatprivacyguy.com/blog/chrome-...
thatprivacyguy.com
Google Chrome silently installs a 4 GB AI model on your device without consent. At a billion-device scale the climate costs are insane. — That Privacy Guy!
Google Chrome is downloading a 4 GB Gemini Nano model onto users' machines without consent, with no opt-in, no opt-out short of enterprise tooling, and an automatic re-download every time the user del...
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Sharon Howard @sharonhoward.bsky.social · 30/04/2026
I don't think people fully understand yet just how fragile university-hosted digital resources are after external funding ends (especially if the lead academic retires or moves or is made redundant).
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Ross Duncan @rossquantum.bsky.social · 20/04/2026
Back in UK. At #qctip in Oxford.
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John Children @johnchildren.bsky.social · 16/04/2026
github.com/Quantinuum/z... stay zixy
github.com
GitHub - Quantinuum/zixy: Quantinuum's high performance library for the manipulation of Pauli strings and other quantum algebraic objects.
Quantinuum's high performance library for the manipulation of Pauli strings and other quantum algebraic objects. - Quantinuum/zixy
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Conor Titania Mc Bride @pigworker.bsky.social · 16/04/2026
Today's gig at Cambridge Computer Laboratory, entitled "Andy Pitts Says 'Type Soundness proofs are two a penny.' But I Think They're Cheaper Than That" www.youtube.com/watch?v=-QUq...
youtube.com
Andy Pitts says 'Type Soundness proofs are two a penny.' But I Think They're Cheaper Than That
YouTube video by Conor McBride
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Ross Duncan @rossquantum.bsky.social · 26/03/2026
After a year in Japan today is my last day at Quantinuum's Tokyo office. It's been a great privilege to work with such great colleagues.
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Ross Duncan @rossquantum.bsky.social · 24/03/2026
agelesslinux.org
agelesslinux.org
Ageless Linux — Software for Humans of Indeterminate Age
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BeijingPalmer @beijingpalmer.bsky.social · 20/03/2026
a billionaire must never make a decision because the billionaire can never be held accountable
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Ross Duncan @rossquantum.bsky.social · 12/03/2026
This makes me uneasy.
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Ross Duncan @rossquantum.bsky.social · 09/03/2026
From my brilliant colleagues: Fault-tolerant demonstrations of QAOA and HHL. This actually came out last week, but I failed to post about it! #quantum #quantumcomputing #quantinuum #ftqc #qec arxiv.org/abs/2603.04584
arxiv.org
Fault-tolerant execution of error-corrected quantum algorithms
Scaling up quantum algorithms to tackle high-impact problems in science and industry requires quantum error correction and fault tolerance. While progress has been made in experimentally realizing err...
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Conor Titania Mc Bride @pigworker.bsky.social · 04/03/2026
The firm of which I am the Dowager Duchess is hiring! We want lively brains for new explains and well taught wains. www.jobs.ac.uk/job/DQS044/l...
jobs.ac.uk
Lecturer in Mathematically Structured Programming (790646) at University of Strathclyde
Apply for the Lecturer in Mathematically Structured Programming (790646) role on jobs.ac.uk, the top job board for academic positions in higher education. View details and apply now.
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Ross Duncan @rossquantum.bsky.social · 04/03/2026
2026 : The year of Linux on the Desktop.
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Ciarán Ryan-Anderson @ciaranra.bsky.social · 03/03/2026
If you are interested in working in the intersection of QEC and software check out our job posting for a position at Quantinuum: jobs.eu.lever.co/quantinuum/b... Areas of research include QEC software development, logical noise modeling, resource estimation, QEC/Hardware co-design, and more.
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