inactive | go @timohillmann.bsky.social | PhD student @chalmersuniv. Interested in circuitQED, bosonic error correction & driven-dissipative phase transitions
Gothenburg, Sweden
Joined March 2022
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Check out @mike_vasmer views on our project about fault complexes! Thanks for keeping an open mind about my vague ideas and intuitions throughout!
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Last year I’ve spent some months at @XanaduAI. I wanted to use that time to finally properly understand fault-tolerant MBQC. Digging in the literature I found that previous works didn’t fit my style of thinking. It was time for something new!
scirate.com/arxiv/2410.12963
I hope that the concept of the fault complex proves to be useful beyond our work. We’ve sketched out a few extensions to subsystem codes and also circuit-level noise models.
I see it as a step of going away from the picture of static codes to fault-tolerant channels!
Thanks again to the whole @XanaduAI team and especially my close collaborators on this project, Guillaume, Ilan, and @mike_vasmer
Tired of quantum error correction feeling like a bad trip? Fear no more!
Meet our new method: Localized Statistics Decoding
(LSD). Today's the day that we bring it to the masses!
scirate.com/arxiv/2406.18655
(1/7)
Our recipe is openly available as part of the LDPCv2 package which contains lots of other good stuff. stim/sinter integration, overlapping window decoders for circuit-level noise, you name it.
github.com/quantumgizmos/ldp…
(6/7)
Thanks to the team for this fun collaboration; @lucasberent @armanda_oq @jenseisert @rbrtwll @QuantumGizmos
(7/7)
It’s the longest day of the year for everyone on the northern hemisphere, so don’t tell me there’s not enough time for you to read our new paper where we propose a new family of codes we call radial that are single shot with a high threshold!
scirate.com/arxiv/2406.14445
Our simulations of circuit-level noise show that radial codes maintain error suppression similar to surface codes, even when decoded using a single-shot approach, but require 5x fewer physical qubits. This can enable faster logical clock speeds and reduced decoding complexity.
This was a fun collaboration with Tom Scruby and @QuantumGizmos that I joined when Tom and I met at the 2024 YITP Quantum Error Correction Workshop in Kyoto. Thanks again to @BBaragiola, Andrew Darmawan and Yoshifumi Nakata for organizing!