I have a few things to plug so I guess this needs to be a thread. First: new paper! What if instead of designing quantum software with H's in boxs and of weird things, what if you just play whack-a-mole with a managable set of variables. Turns out it works! scirate.com/arxiv/2605.2...

Cute Cat Plays Whack-A-Mole Game

ALT: Cute Cat Plays Whack-A-Mole Game

static.klipy.com

It's 10 years since IBM kicked off the quantum cloud revolution. It ruined my ability to care about anything that I couldn't just go off and run. And long may it continue to do so!

Trailer for our concerts at Oxford's Quantum Centenary with "the Kazakh Mozart", virtuoso musician and composer Rakhat-Bi Abdyssagin. youtu.be/4e_Gg-BZwo0

Oxford Quantum Centenary Conference Concerts Highlights: Rakhat-Bi Abdyssagin and Bob Coecke

YouTube video by Oxford Philosophy of Physics

youtu.be

Devastated that I didn’t make the cut James! :’(

Rapid Dissipative Ground State Preparation at Chemical Transition States

Simulating chemical reactions is a central challenge in computational chemistry, characterized by an uneven difficulty profile: while equilibrium reactant and product geometries are often classically ...

arxiv.org

Two great papers on the arXiv today! One has a title echoing that of Kitaev's "Fault-tolerant quantum computation by anyons" almost 30 years ago. Finally Anasuya Lyons and @benbrown.bsky.social shown how to make it work from encoding to decoding. arxiv.org/abs/2602.11258

We've studied iterative strategies for finding ground states We use the ground state of an easy Hamiltonian to `warm start' finding the ground states for some harder Hamiltonians We derive gradient guarantees that (as for adiabatic methods) depend on the gap and a few other natural properties 🧵👇

Ricard Puig@pvricard.bsky.social · 6mo ago

Preparing approximate ground states has never been hotter 🔥, nor cooler🥶 scirate.com/arxiv/2602.0... In short: we combine warm-started variational quantum circuits with adiabatic principles to show how iterative training strategies can be useful to prepare approximate ground states.

Did you know you can simulate quantum states with Pauli and Majorana propagation? In short: High-temperature states are provably and practically sparse, and we can use imaginary time evolution to get there starting from the infinite-temperature state. scirate.com/arxiv/2602.0...

How do we figure out the circuit required to prepare a given state, and what's the best circuit? With help from MPS, these guys get it down to logarithmic depth. arxiv.org/abs/2602.02698

Spin qubits have finally reached the point where superconducting qubits were 10 years ago! arxiv.org/abs/2601.23267

Weight-four parity checks with silicon spin qubits

Recent advances in coherent spin shuttling have made sparse semiconductor spin qubit arrays an appealing solid-state platform to realize quantum processors. The dynamic and long-range connectivity ena...

arxiv.org

I have 1024 followers! Nobody else follow me now. I like powers of 2.

Logical qubits encoded in the fusion space of non-Abelian anyons in a generalized surface code. Not the most efficient way to build a quantum computer, but definitely the coolest! Quantinuum and co show how it's done on one of their H2 devices. arxiv.org/abs/2601.20956

Yesterday I did two things: * Wrote a self-indulgent blog post reflecting on the last 10 years in which I went crazy and started doing quantum games. * Held a surface code in my hand. Here I share both with you, the denizens of blue sky open.substack.com/pub/mothquan...

Today we get the computer scientists' view on the transition into fault-tolerance. There will indeed be a whole lot of classical computing involved in getting early fault-tolerance running, and the better it is, the more quantum we can use. arxiv.org/abs/2601.20247

Always nice to see that quantum foundations have survived the wave of capitalism that has swept through quantum. Today Hausmann and Renner from ETH show that quantum states are more than just a few probability distributions in a trenchcoat. arxiv.org/abs/2601.18872

I got out of the habit of posting half-baked thoughts about papers when Twitter died, But I think I should bring it back! This paper combines error mitigation inside QEC to cancel leading logical errors and effectively giving a distance boost. arxiv.org/abs/2601.18384

"We are a group of quantum scientists who oppose the ongoing militarization of our societies and the use of quantum research for military purposes." disarmquantum.com Manifesto: arxiv.org/abs/2601.14282 Here's just one example: "Quantum technology for military applications" doi.org/10.1140/epjq...

What does early FTQC mean? It seems to be an increasingly popular term, but usage seems to split into two camps. One is FTQC but early. So you have logical qubits with a decent distance, magic state production to support logical non-Cliffords. It's just early because you don't have a lot of it.

Something a little different. Some cartoonists put out a call for comics about local ICE experiences. This one happened a few months ago so it's a little older than current events, but it's a story that I never stopped thinking about. #ICEoutcomics

Is Q2B more Q than it was, or did I just become too B?

I think about this tweet a lot

🎮 𝗖𝗮𝗻𝗮𝗱𝗮’𝘀 𝗤𝘂𝗮𝗻𝘁𝘂𝗺 𝗔𝗿𝗰𝗮𝗱𝗲 is live! Built by our 2024 micrograntees, Ella Meyer & Timothy King, it lets students explore quantum through games. Join the 𝗤𝘂𝗮𝗻𝘁𝘂𝗺 𝗔𝗿𝗰𝗮𝗱𝗲 𝗚𝗮𝗺𝗲 𝗝𝗮𝗺 for grades 6-12: buff.ly/J5Yw5Mq

UBCs Year Of Quantum Arcade Game Jam | KnowledgeFlow Cybersafety Foundation

✨ We are excited to announce that UBC Geering Up has partnered with KnowledgeFlow and ICTC to host the first-ever International Year of Quantum: Arcade Game

buff.ly

That's me. I did a thing.

Riverlane@riverlane.com · 9mo ago

⏰ The time to act is now: Download the full report first to gain deeper insights and chart your course in the QEC era: www.riverlane.com/quantum-erro... 🧪🧵(5/5) @decodoku.bsky.social @mothquantum.bsky.social

Anyone in Geneva for Swiss Quantum Week? I'm around today and tomorrow if anyone wants to catch up.

Today I'll be speaking at QTech 25 in Hungary: a collection of four quantum conferences in a trenchcoat. Since I'll speak about our game whose level generation runs on-demand on a real QPU, we'll be turning the live QPU generation on this afternoon. Check it out! www.roblox.com/games/941695...

Space Moths

Space Moths will be released during Gamescom 2025. Click on the ⭐️ button to be the first to play with quantum on-demand! For ages, the moths of the planet Nerii lived peacefully, their wings shimmer...

roblox.com

Makes me think if No Man's Sky launched today in the same way it did in 2016 people would accuse it of being AI slop. Generative AI and (most) Procedural Content Generation are not the same thing. (I should make a video about this...)

Kenney@kenney.nl · 11mo ago

It's silly to see procedurally generated content called "AI generated slop" because it really isn't. Procedural generation takes skills, generative AI does not.

Tenure track assistant prof job up for grabs in Basel. It's quantum computing theory, based in computer science, and part of the NCCR SPIN. Whoever gets this job will probably have to collaborate with me. Whether you see that as a pro or con is up to you. jobs.unibas.ch/offene-stell...

Universität Basel: Tenure-track Assistant Professorship in Theoretical Quantum Computing

The University of Basel, Switzerland, invites applications for a professorship in theoretical quantum computing. The University of Basel is the home institution of the Swiss National Center of Compete...

jobs.unibas.ch

This weekend is the global quantum game jam! Sign up and hack together a game over the weekend. Or just tune in to the talks on Twitch. www.quantumgamejam.org

Moth@mothquantum.bsky.social · 11mo ago

MOTH’s João Ferreira will present 'Space Moths' at Quantum Game Jam 2025 - the first Roblox MMOG with levels generated on-demand by quantum computers. More on MOTH:  mothquantum.com Event info:  quantumgamejam.org #mothquantum #quantumgamejam #Roblox #SpaceMoths

MOTH’s João Ferreira will present 'Space Moths' at Quantum Game Jam 2025 - the first Roblox MMOG with levels generated on-demand by quantum computers. More on MOTH:  mothquantum.com Event info:  quantumgamejam.org #mothquantum #quantumgamejam #Roblox #SpaceMoths

New paper today! This time a collaboration between MOTH and DESY, as well as artist Roman Lipski. We use quantum circuits to do image manipulation effects, embedded in a digital paint tool. It's all free and open source. A perfect basis for your next quantum hackathon! scirate.com/arxiv/2509.0...