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
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)
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
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Excited to say this is now published in Nature Comm. Read the full (open source) article here: nature.com/articles/s41467-0…
New experimental results out today with collaborators from @QTL_Chalmers! We measure the long sought-after cubic phase state that is obtained by applying the cubic Hamiltonian x³ to an initial squeezed state, by engineering the cubic gate explicitly! scirate.com/arxiv/2308.15320 (1/7)
It's a good opportunity! Feel free to reach out with questions as I am currently holding such a position - and Anton was when he was a PhD student :)
Three open Excellence PhD positions @chalmersuniv in the field of Nanoscience and Nanotechnologies. Application deadline: March 10. Check out the ad at chalmers.se/en/about-chalmer…
Yesterday marked my last day at @XanaduAI, at least for now. It’s been great place to think about the MBQC framework and an overall great atmosphere. Take the chance to apply for their residency program until Dec 8th xanadu.ai/residency/
Now into the last phase of my PhD.
On my way to Toronto where I’ll be joining @XanaduAI for the next three months to work on MBQC with GKP qubits. Looking forward to get a glimpse into industry and exploring Toronto!
Fun fact: Since the development of the quasi-single-shot protocol started on the 3D toric code, I had initially suggested calling these codes „4 - ε“ single shot codes. Unfortunately that name didn’t stick!
Good to see this one out now!
arxiv.org/abs/2309.02306
On my way to Toronto where I’ll be joining @XanaduAI for the next three months to work on MBQC with GKP qubits. Looking forward to get a glimpse into industry and exploring Toronto!
New experimental results out today with collaborators from @QTL_Chalmers! We measure the long sought-after cubic phase state that is obtained by applying the cubic Hamiltonian x³ to an initial squeezed state, by engineering the cubic gate explicitly! scirate.com/arxiv/2308.15320 (1/7)
Our work realizes experimentally a particular set of universal gates for continuous-variable quantum computing as first envisioned by Lloyd & Braunstein arxiv.org/abs/quant-ph/98100… (2/7)
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I was always told playing video games on a quantum computer won’t be a thing; however, looking closely you find a Mario Cart race going on (in the sketch of) @QuantinuumQC latest ion trap quantum processor H2!
This is a fun Easter egg hidden in the arxiv version arxiv.org/pdf/2305.03828.pdf and a nice continuation of traditions after hidding Chuck Norris in arxiv.org/pdf/2003.01293.pdf
My #QCTIP talk is now available on YouTube.
Thanks @RiverLane_io for hosting, hoping to see more bosonic codes in next years edition! youtu.be/UVj5c-_6GLQ
Also, this work is now published PRA, have a look of you haven’t seen it: journals.aps.org/pra/abstrac…
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If you are at #APSMarch, don't miss my colleague Axel from @QTL_Chalmers presenting in session W67 on Thursday at 4pm. He shares our current progress on the universal control of a Kerr-free nonlinear bosonic mode with native interactions, e.g., to prepare a tri-squeezed state.
This is a project I am super excited about as it's based on a proposal I developed during my master's thesis to prepare cubic phase states (arxiv.org/abs/2002.01402). You'll have to go yourself though to have a peek at the cubic phase state we can prepare in the lab right now :)
On Monday, 9 am, I'll present my recent work on dissipatively stabilized squeezed cat qubits at the #APSMarch meeting in session A67 on bosonic codes and error correction. The session is full of high-quality talks, so don't come late or you will have to squeeze in.
Akira Furusawa showing impressive results of GKP state preparation using cat state breeding in an optical platform. Exciting times for bosonic codes!
Are you struggling to find a PhD position with your dream topic? You want to decide your topic, advisors and collaborators on your own? Look no further, at Chalmers we have three positions of exactly that kind!
chalmers.se/en/about-chalmer…