Campbell McLauchlan
@universal-soup.bsky.social
Postdoctoral research associate in the quantum theory group at the University of Sydney
You can read our paper here! arxiv.org/abs/2508.08191
Single-Shot Decoding and Fault-tolerant Gates with Trivariate Tricycle Codes
While quantum low-density parity check (qLDPC) codes are a low-overhead means of quantum information storage, it is valuable for quantum codes to possess fault-tolerant features beyond this resource e...
arxiv.org
August 16, 2025 at 2:46 PM
You can read our paper here! arxiv.org/abs/2508.08191
Reposted by Campbell McLauchlan
Slaughterhouse 5 was incredibly influential for me when I first read it. Still one of the only novels I've re-read. It's an amazing book!
February 9, 2025 at 4:01 AM
Slaughterhouse 5 was incredibly influential for me when I first read it. Still one of the only novels I've re-read. It's an amazing book!
This is really cool though!
December 27, 2024 at 11:01 AM
This is really cool though!
Couldn't there be highly-energetic, stable, complex systems in a universe without significant energy dissipation? With slow energy dissipation there would be slow energy exchange between systems which could maybe lead to stability?
December 23, 2024 at 7:29 PM
Couldn't there be highly-energetic, stable, complex systems in a universe without significant energy dissipation? With slow energy dissipation there would be slow energy exchange between systems which could maybe lead to stability?
I hear rumours about Brisbane 2032...
December 23, 2024 at 8:51 AM
I hear rumours about Brisbane 2032...
You're thinking of "poll vultures" which are news outlets that, around election time, report constantly on the polls to maintain uninterrupted coverage
December 23, 2024 at 8:42 AM
You're thinking of "poll vultures" which are news outlets that, around election time, report constantly on the polls to maintain uninterrupted coverage
More thoughts here: www.goodreads.com/review/show/...
Campbell McLauchlan's review of Collapse
4/5: "...the Soviet Union fell victim to a perfect storm and a hapless captain." The main argument of this book is that the collapse of the enormous USSR was not inevitable and was helped along treme...
www.goodreads.com
December 22, 2024 at 11:48 PM
More thoughts here: www.goodreads.com/review/show/...
3.9bl in 1986 to 93.4bl in 1991.
Although I think it's hard to agree with everything in the book, it is a fascinating description of a tumultuous and very relevant period of history.
December 22, 2024 at 10:10 PM
3.9bl in 1986 to 93.4bl in 1991.
Although I think it's hard to agree with everything in the book, it is a fascinating description of a tumultuous and very relevant period of history.
None of them really wanted to be heading up a coup.
- Interestingly, you can see continuity between the Russian nationalist reaction to Ukraine's declaration of independence and Putin's claims at the start of the invasion.
- A simple demo of reform failing: the number of rubles printed grew from
- Interestingly, you can see continuity between the Russian nationalist reaction to Ukraine's declaration of independence and Putin's claims at the start of the invasion.
- A simple demo of reform failing: the number of rubles printed grew from
December 22, 2024 at 10:10 PM
None of them really wanted to be heading up a coup.
- Interestingly, you can see continuity between the Russian nationalist reaction to Ukraine's declaration of independence and Putin's claims at the start of the invasion.
- A simple demo of reform failing: the number of rubles printed grew from
- Interestingly, you can see continuity between the Russian nationalist reaction to Ukraine's declaration of independence and Putin's claims at the start of the invasion.
- A simple demo of reform failing: the number of rubles printed grew from
Can't wait for your reaction to tomorrow's connections! (love from Australia)
December 12, 2024 at 12:55 AM
Can't wait for your reaction to tomorrow's connections! (love from Australia)
Additionally, while comparing the X3Z3 code numerically to the CSS Floquet code and two honeycomb code variants, we found some interesting features about the performance of those previously existing codes under biased noise models.
December 10, 2024 at 5:33 AM
Additionally, while comparing the X3Z3 code numerically to the CSS Floquet code and two honeycomb code variants, we found some interesting features about the performance of those previously existing codes under biased noise models.
The bad (but interesting) news: you seemingly can't do as well as bias-tailored surface codes (or color codes). We relate this to symmetries and back this up with no-go theorems for Floquet codes suggesting the X3Z3 code might be optimal.
December 10, 2024 at 5:33 AM
The bad (but interesting) news: you seemingly can't do as well as bias-tailored surface codes (or color codes). We relate this to symmetries and back this up with no-go theorems for Floquet codes suggesting the X3Z3 code might be optimal.
The good news: just as in the surface code, you find better thresholds and sub-threshold scaling using the X3Z3 code compared to other Floquet codes. You can also find bias-preserving measurement circuits.
December 10, 2024 at 5:33 AM
The good news: just as in the surface code, you find better thresholds and sub-threshold scaling using the X3Z3 code compared to other Floquet codes. You can also find bias-preserving measurement circuits.
0 should always be at the top! Change my mind. Also while we're at it, world maps should be oriented South-up.
December 6, 2024 at 3:53 AM
0 should always be at the top! Change my mind. Also while we're at it, world maps should be oriented South-up.
The Philosophize this podcast put me onto this essay. Love it! The podcast and the essay.
December 5, 2024 at 10:42 AM
The Philosophize this podcast put me onto this essay. Love it! The podcast and the essay.