Here are slides for my @qip2025.bsky.social tutorial on quantum error correction. doi.org/10.5281/zeno...

RETRACTED ARTICLE: Quantized Majorana conductance - Nature In a step towards topological quantum computation, a quantized Majorana conductance has been demonstrated for a semiconducting nanowire coupled to a superconductor.

This is a mega-thread of all Microsoft problems related to topological qubits.

NOTE: I skip the numerous news reports and press releases, this thread is for serious _scientific_ and procedural materials

First retraction: Quantized Majorana Conductance, from Nature

www.nature.com/articles/nat...

Congratulations!

The sensor for the light in my office seems to have a blind spot directly where my desk is.

In the spirit of turning bugs into features I guess this forces me to get up and walk to the light switch every 10 minutes...

Categories for Quantum Theory Monoidal category theory serves as a powerful framework for describing logical aspects of quantum theory, giving an abstract language for parallel and sequential composition, and a conceptual way to u...

I'm trying to learn some basic category theory for quantum information, so I started reading "Categories for Quantum Theory" by Heunen and Vicary. It helps me to better grasp what category theory is really about since examples they give are all in my research area.
books.google.com/books?id=FdG...

Scaling and logic in the color code on a superconducting quantum processor Quantum error correction is essential for bridging the gap between the error rates of physical devices and the extremely low logical error rates required for quantum algorithms. Recent error-correctio...

We've been getting a lot of questions about alternate QEC codes, and are we looking into any? Yes! Here's experiments for two on Willow.

The color code: arxiv.org/abs/2412.14256

Dynamic surface codes: arxiv.org/abs/2412.14360

Found slides by Ankur Moitra (presented at a TCS For All event) on "How to do theoretical research." Full of great advice!

My favourite: "Find the easiest problem you can't solve. The more embarrassing, the better!"

Slides: drive.google.com/file/d/15VaT...
TCS For all: sigact.org/tcsforall/

Google's new Project Mariner reminds me of my old SikuliX (sikulix.com) workflows, and just how finicky and slow automation on the user-input level can be. It may be useful while AI agents can't interface directly with other programs' internals, but surely not as a long-term solution?

List of accepted talks for #QIP2025

rsvp.duke.edu/event/qip202...

GitHub - quantumgizmos/quantum-journal-typst-template Contribute to quantumgizmos/quantum-journal-typst-template development by creating an account on GitHub.

Okay. I made a start. Basic functionality:

github.com/quantumgizmo...

It always seemed crazy to me that there wasn't a direct renderer for markdown to PDF... as far as I am aware, tools either first convert it to HTML or use LaTeX to generate the PDFs. That's what intrigued me about the typst project.

The disorder we looked at is such that it kept the qubits within an effective toric code state, so looking at the entanglement growth might not be too fruitful. But I can definitely imagine that in an altered setting tensor networks might give some insight!

It does have real-time editing and commenting features like in google docs - that's primarily why I use it.

I basically have the same workflow but with vim - I much prefer editing locally with my configuration. But then I push to overleaf eventually so that we can do real-time collaboration with co-authors without worrying about merge conflicts, etc.

With overleaf's brief hiatus today, just a reminder about the beauty that is latexmk (mg.readthedocs.io/latexmk.html) - automatically re-runs LaTeX the required number of times to correctly generate citations and cross-references.

And it already comes bundled with most LaTeX distributions!

If you're familiar with it, instead of Dropbox it's also quite efficient to use overleaf as a git repo and just push/pull from your machine. And then all the benefits of git version control too!

What happens when you take a quantum Floquet code and add spatial and temporal randomness to its evolution?

Quite a bit! Our paper from a couple months ago explores this behaviour, using a disordered dynamic automorphism color code as a key example: scirate.com/arxiv/2410.0...

I think the latter 😂 A few things wrong with the analogy but maybe the main one being the child/parent shouldn't be exerting effort to stay in motion...

By popular demand, here is a starter pack of all quantum PhD students on BlueSky that we could find.
go.bsky.app/AUTn1di