@quantumearl
Arch mage of quantumancy @ riverlane / Prof @ Sheffield uni / quantum error correction and algorithms / poster of posts / reader of sci-fi / player of games / father of daughters / cronic typer of typoes & requester of edit buttons
🎉 It's publication day! 🎉
Congrats to the team for a new @prxquantum.bsky.social paper where their 'ghost protocol' speeds up QEC cycle speeds 10x for AMO qubits 👻
journals.aps.org/prxquantum/a...
👏 Mark Turner, @quantumearl.bsky.social, Ophelia Crawford, Neil Gillespie, and Joan Camps
Registration is now open for QEC26, to be held this June in sunny Santa Barbara, CA! See the registration page at qec-conference.org for a link.
Also, the deadline for submissions is next Friday. Make sure to get those in and spread the word to friends and collaborators!
Come on quantum MUB folks. Don’t make me post on X. What’s the verdict?
Can the experts weight in if MUBS is solved now?
scirate.com/arxiv/2511.0...
@sflammia.bsky.social ?
Can the experts weight in if MUBs are solved now?
scirate.com/arxiv/2511.0...
Bids from anywhere are welcome. And the last Europe QEC was a long time ago, so that bodes well for a strong European bid.
But after this year, I've done my turn of QEC organising/steering, and so someone else in Cambridge (not me) will have to bid.
I also posted this on X and for the first time got more reposted here than on X! I try not to use X but this seemed too important to limit to the bluesky bubble, but maybe X is actually the smaller bubble now.
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
38 points to my daughter!
Congrats on a great word.
So deep, it took me a while to realise it was human:
youtube.com/watch?v=DRwJ...
I was expecting "expert prediction" to be a third-party authority, and found that framing to be weird.
I remember seeing project outlines in 2005-2008 saying things like, we will have a fault-tolerant million qubit device in 3 years. If anything, roadmaps have gotten better (more accurate/realistic) since then.
Roadmaps! Useful guides for the wider community, or overly simplistic and prone to exaggeration (sometimes, but not always!) ?
thequantuminsider.com/2025/05/16/q...
I ask because we are reviewing our roadmap:
www.riverlane.com/press-releas...
What would you like to know, or do you ignore these?
Mama etna has calmed down in time for our flight home to be undisturbed.
Surreal to see videos of scary fast pyroclastic flows only a few days after we had a tour up there! (Check the news if you don’t know what I am talking about)
Family holiday. At a loss to name this mythical creature, maybe it is the long forgotten mercentaur! It looks functional for neither sea nor land.
His star role in “the divincenzo code” including incredible evil scientist dance moves
youtube.com/clip/Ugkxaxa...
Quantum news: Prof Walmsley returns to Oxford to lead Oxford Quantum Institute
www.physics.ox.ac.uk/news/profess...
Well deserved, alas the bio in the article misses out one of his most notable career moments, ….
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/...
I'm often asked if I'll redo the 2019 quantum factoring estimate. Denser storage by yokes, smaller magic factories by cultivation, slimmer approx arithmetic by Chevignard et al… surely the cost is lower now?
Yes, it's lower now.
security.googleblog.com/2025/05/trac...
arxiv.org/abs/2505.15917
Google quantum symposium is fantastic. But many of the results presented are not on the arXiv yet, and we’ve been asked to not post about them on social media. So, sorry, no live update folks. But I can say cool stuff is coming!
When your marketing celebs get old and need name tags to be recognisable. LA highlights.
Death by surface code!
Nice catalog of talks here.
Jet lagged and adjusting
I highly recommend this paper.
[EPIC POST-PLANE POST FINISHED]
There are also a bunch of other tricks in there like optimization of electron orbital basis to minimize a crucial parameter Lambda, also clearly a smart thing to do. Of course, the devil is in the details, and the work is brilliantly executed.
What is the main contribution of Gunther et al? They explore the more LCU based approach (leaving behind diamond norms) while also using a “best of both worlds” approach. This is clearly the right thing to do and was a combination that I never got to exploring.
Gunther does a fantastic job of reviewing these connections and is a far better intro to the subject than any other that I have read so far.
So it was lovely to read Gunther et al and return to the topic. Firstly, there are a bunch of connections, especially between my papers 1 and 3 above, which have never been very well explained the literature.
And over the years, I have been excited to see lots of papers and conference posters on randomized approaches, from people including Eisert, Weibe, Guzik, and others. I read some of these, but many are still in que (for another plane journey!) and I am sure I missed some gems.