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kenbrownquantum.bsky.social

@kenbrownquantum.bsky.social
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Robin Kothari @robinkothari.bsky.social · 15h
Carlos Bravo-Prieto, Aram Harrow (@harrowing.bsky.social), and I just uploaded a preprint that proves new upper and lower bounds to finally close the query complexity of the quantum linear systems problem. scirate.com/arxiv/2609.3... arxiv.org/abs/2609.35660
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 23/08/2026
Great time at the @fieldsinstitute.bsky.social last week at the @cqiqc-uoft.bsky.social workshop. I spoke about spin-boson work. My colleague Iman Marvian's student Plato Deliyannis spoke about their work on Tavis-Cummings models.
A graduate student speaks about quantum control with the Tavis-Cummings model at a conference at the fields institute. The slide points to three papers: 	arXiv:2506.03453 , arXiv:2606.12906 , and arXiv:2606.12813
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Felix Leditzky 🏳️‍🌈🏳️‍⚧️ @felixled.bsky.social · 28/07/2026
Some good personal news in these strange and turbulent times: I was just promoted to Associate Professor on indefinite Tenure, effective Aug 16 🥲 Immensely grateful to everyone who helped me get here - I won't list them since they know who they are 😊
static.klipy.com
Michael Scott's Dancinha Dance
ALT: Michael Scott's Dancinha Dance
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Ben Brown @benbrown.bsky.social · 27/07/2026
I am very happy to see our work on non-Clifford gates with 2D non-Abelian topological phases published in PRX journals.aps.org/prx/abstract.... This is definitely among the most exciting projects I have worked on.
journals.aps.org
Universal Fault-Tolerant Quantum Computation in 2D without Getting Tied in Knots
Researchers have designed a way to perform complex logic gates in two-dimensional quantum computers by temporarily moving data into an exotic non-Abelian phase. This method provides a path toward larg...
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Ross Duncan @rossquantum.bsky.social · 19/06/2026
Do you like compiling quantum software? Maybe you should send something to the 8th International Workshop on Quantum Compilation? The deadline is the 10th of July! Tell your friends! (Just the cool ones.) quantum-compilers.github.io/iwqc2026/ #quantum #compilers #quantumcomputing #iwqc2026
quantum-compilers.github.io
8th International Workshop on Quantum Compilation
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 11/06/2026
Alas, I am missing QEC26 but if I was there I would be telling everyone about our new paper about experimentally determined DEMs. arxiv.org/abs/2606.11496 . Eva Takou led a team with USC and CSIC to test experimental DEMs on Google and IBM devices.
arxiv.org
Logical error estimation from syndrome data of surface-code experiments
Decoders for quantum error correction (QEC) experiments rely on detector error models (DEMs), which encode, for each error, its probability and the detectors and logical observables it flips. Here we ...
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Error Correction Zoo @eczoo.bsky.social · 11/06/2026
Big update: the EC Zoo is now a handbook. It spans codes, sphere packings, lattices, designs, groups, and phases of matter. Extensively checked, but not perfect—feedback very welcome: arxiv.org/abs/2606.11484
arxiv.org
Handbook of Error-Correcting Codes
Barcode scans, clear phone calls, reliable data storage, satellite communication, and large-scale quantum computation are all made possible by error correction. We present a handbook version of The Er...
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Kartik @k4rtik.bsky.social · 30/05/2026
Lightning talk submissions are open for the Quantum Software 2.6 workshop at IEEE Quantum Week in Toronto. Working on quantum software? We'd love to hear from you. Workshop: sites.google.com/view/quantum... Submit: forms.gle/fnSPSmERLSPq...
sites.google.com
Quantum Software 2.6 Workshop
Quantum Software 2.6: current challenges and headways in quantum software IEEE Quantum Week 2026 conference, Sept 13th - Sept 18th Metro Toronto Convention Center Toronto, Ontario, Canada
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Sunny He @sunnyhe.bsky.social · 03/06/2026
Extractors: smaller than the code, enable full logical processing, same error rate as memory, compatible with fixed connectivity. As promised, they turn quantum memories into quantum processors. arxiv.org/abs/2606.03507 Joint work with the wonderful John Blue, Harry Zhou, and Ike Chuang.
arxiv.org
Full Extractors for Logical Processing in Hypergraph Product Codes
Quantum low-density parity-check (QLDPC) codes are promising candidates for practical low-overhead quantum memories. For large-scale fault-tolerant quantum computation, we further need logical process...
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Joschka Roffe @qec.codes · 20/05/2026
TartanQEC Workshop | University of Edinburgh 24-26 June. The full programme is now available. Poster submissions are still being accepted & registration deadline is 1st June. Sign up now 👇 qec.codes/tartan2026/t...
qec.codes
TartanQEC Timetable
TartanQEC Workshop timetable, 24-26 June 2026, School of Informatics, University of Edinburgh.
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Dom Williamson @domwilliamson.bsky.social · 20/05/2026
Excited to share our new work led by fantastic undergraduate research student Cassie Hopkin. We show that many translation invariant qLDPC codes can be viewed as compactifications of a single parent fracton code that is local in a higher dimension. arxiv.org/abs/2605.19298 @vva.bsky.social
arxiv.org
Translation-invariant quantum low-density parity-check codes from compactified fracton models
Quantum error-correcting codes with translation symmetry and local checks have been studied extensively, leading to a wide variety of fracton codes in three or more dimensions which lack a complete un...
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Dom Williamson @domwilliamson.bsky.social · 19/05/2026
Very excited to explore new roads to fault-tolerant photonic quantum computation with PsiQuantum! rms.arc.gov.au/RMS/Report/D... @arc-gov-au.bsky.social @sydney.edu.au @psiquantum.bsky.social @bartlettquantum.bsky.social @acdoherty.bsky.social @jcbridgeman1.bsky.social @quantum-roberts.bsky.social
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 16/05/2026
I took a post commencement backpacking trip to Stone Mountain, NC. #tentview
A picture of fire pit surrouned by fallen logs in a deciduous forest.
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 16/05/2026
Congrats to all the 2026 graduates from my lab! Read more about them and their papers on the lab website. brownlab.pratt.duke.edu/news/2026-gr...
2026 graduates from the Brown Lab (1 BS, 2 MS, 2 PhD) and Dr. Brown pose for a photo.
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 05/05/2026
Sometimes work takes you to Fayetteville #hotelview
View from a hotel window showing a parking lot with an American flag and a church across the street. Green oak trees in the background and a gray sky.
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 22/04/2026
I gave a talk about our quantum error correction tools at the Monte Verita Quantum Codes conference. It has been a great conference so far including experiment and theory for both CV and DV codes.
Kenneth Brown talking about quantum error correction tools developed in the Brown Lab at the Monte Verita Quantum Codes conference
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Abhinav Anand @abhinav-anand.bsky.social · 22/04/2026
We just posted a new paper: “Architecting Early Fault Tolerant Neutral Atoms Systems with Quantum Advantage” arxiv.org/abs/2604.19735 🚀🎉 Our goal was to identify fault-tolerant (FT) architectures for neutral atom platforms that can enable quantum advantage experiments in the near future.
arxiv.org
Architecting Early Fault Tolerant Neutral Atoms Systems with Quantum Advantage
Recent advancements in neutral atom platforms have enabled exploration of early fault-tolerant (FT) architectures for applications with quantum advantage, such as quantum dynamics simulations. An effi...
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Dripto Debroy @dripto.bsky.social · 18/04/2026
Accepted submissions for QEC26 are out: qec-conference.org/2026/accepte.... Congratulations! If you are attending QEC, a few reminders below:
qec-conference.org
Accepted Papers
Invited Speakers Natalie C. Brown (Quantinuum) Vedika Khemani (Stanford University) Anthony Leverrier (Inria) Yue Wu (Microsoft) List of Accepted Contributed Talks (presented in order of submission) T...
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Craig Gidney @craiggidney.bsky.social · 17/04/2026
Congrats to Keegan Ryan for being the first to exploit the simulator we used to validate the secret quantum circuits: blog.trailofbits.com/2026/04/17/w... It kills me that the (now fixed) bugs were simple (we didn't port the op validation code from C++ to Rust!), but that's to be expected.
blog.trailofbits.com
We beat Google’s zero-knowledge proof of quantum cryptanalysis
Trail of Bits discovered and exploited memory safety and logic vulnerabilities in Google’s Rust zero-knowledge proof code to forge a proof claiming better quantum circuit performance metrics than Goog...
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Henry Yuen @henryyuen.bsky.social · 10/04/2026
In this MURI project with Sebastian Will (Columbia), Yongshan Ding (Yale), Shruti Puri (Yale), and Daniel Grier (UCSD), we will explore the potential uses and benefits (and limitations!) of using quantum gates that can act on many qubits at a time.
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 29/03/2026
Swarnadeep Majumder, Brown Lab Alumni, at the APS Global Summit!
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Machiel Blok @machielblok.bsky.social · 19/03/2026
John Preskill expressing thanks to quantum pioneers of the past century and wishing good fortune to the audience, the quantum explorers of the future in an inspiring talk at #APSSummit26 #quantum
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John Preskill @preskill.bsky.social · 19/03/2026
I'm looking forward to the Kavli Symposium tomorrow at the APS Global Physics Summit, where I'll speak about "The Road to Quantum Advantage." summit.aps.org/events/MAR-X02
summit.aps.org
Kavli Foundation Special Symposium: Quantum Science and Technology: Bridging a Shared Future for Physics and Humanity | APS Meeting
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Graeme Smith @graemesmith.bsky.social · 18/03/2026
Wow, amazing!! www.quantamagazine.org/quantum-cryp...
quantamagazine.org
Quantum Cryptography Pioneers Win Turing Award | Quanta Magazine
Charles Bennett and Gilles Brassard were recognized for their foundational work in quantum information science.
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Dan Garisto @dangaristo.bsky.social · 16/03/2026
To close out the first day, I'm in a session where Michael Turner and Maria Spiropulu are presenting the EPP report for the future of particle physics, which came out last year. (Separate from the '24 P5 report) EPP Report: www.nationalacademies.org/read/28839/c...
summit.aps.org
EPP 2025 Report | APS Meeting
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Dan Garisto @dangaristo.bsky.social · 16/03/2026
Dropping in to this session on changes to student visas. summit.aps.org/events/EVM-J...
summit.aps.org
Responding to Proposed U.S. Immigration Changes to Student and Scholar Visa Categories | APS Meeting
APS recently published a white paper to inform the physics community of the proposed changes to F and J visa regulations and concomitant Certificates of Eligibility; the potential impacts on students ...
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Zlatko Minev @zlatko-minev.bsky.social · 16/03/2026
On another note, I’m looking for a 6‑month intern to work with me. Feel free to reach out to me. #QuantumComputing #QuantumErrorMitigation #MachineLearning #APSSummit26 #QuantumResearch
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Dan Garisto @dangaristo.bsky.social · 16/03/2026
Starting off Monday with the... well, memorial plenary for the Relativistic Heavy Ion Collider (RHIC).
summit.aps.org
Plenary: The Legacy of RHIC and the Path to the EIC | APS Meeting
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Quantum Journal @quantum-journal.bsky.social · 13/03/2026
Celebrate with us Quantum's approaching 10 year anniversary in 2026 with the publication of the 2026th paper! Do you know which paper that is? quantum-journal.org/2026-quantum...
quantum-journal.org
2026 Quantum papers!
Congratulations Quantum community! It’s hard to believe 10 years have passed and we’re en route to our 10-year founding anniversary in April 2026. On that occasion we wanted to announce ...
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Dan Garisto @dangaristo.bsky.social · 15/03/2026
The APS Meeting in Denver starts in earnest tomorrow and as sort of an experiment to see if this still works, I've resolved to actually cover the conference on social media (like we did in days of yore), so bear with me for what will be a couple days of posting about physics.
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 16/03/2026
I am the #APSSummit26 (aka #MarchMeeting26 and #AprilMeeting26) and speaking at the session celebrating Abhinav Kandala being awarded the 2026 Landauer Bennett Award in Quantum Computing. If you are at the meeting, please join us on Tuesday summit.aps.org/events/MAR-G03
summit.aps.org
Landauer Bennett | APS Meeting
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 04/03/2026
Had a great visit to the University of Wisconsin - Madison. Here is the #hotelview photo of the amazing new CS building, Morgridge Hall.
A picture of the computer science building, Morgridge Hall, at the University of Wosconsin Madison at night from a hotel room in South Union.
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Ciarán Ryan-Anderson @ciaranra.bsky.social · 03/03/2026
If you are interested in working in the intersection of QEC and software check out our job posting for a position at Quantinuum: jobs.eu.lever.co/quantinuum/b... Areas of research include QEC software development, logical noise modeling, resource estimation, QEC/Hardware co-design, and more.
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Bálint Pató @balintpato.bsky.social · 02/03/2026
Have you ever wondered about the dimensionality of the massive Schwinger model with a two-dimensional, non-periodic electric field? Well, we counted it and proved that it follows the bisection of the Lucas numbers (oeis.org/A005248). This leads to incompatibility with Gauss's law stabilizer QEC.
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Dripto Debroy @dripto.bsky.social · 27/02/2026
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!
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Nicolai Friis @improbabilitydrive.bsky.social · 23/02/2026
10 years after its founding, driven by the energy, enthusiasm, & dedication of the community @quantum-journal.bsky.social quietly published paper #2000 some days ago. At least I think this is a big deal, big shout out to the founders & all authors, reviewers, editors, board members & contributors!
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 12/02/2026
Excited to see Swapnil Patel's paper measuring charge exchange between K and CaH+ on the arXiv arxiv.org/abs/2602.09142 . Joint work with @michaltomza.bsky.social and Dibyendu Sardar at the University of Warsaw. Here is a picture of Swapnil (orange jacket) skiing with other Brown lab alumni.
Four former Brown lab members smiling at the camera with a ski mountain behind them.
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Matt McEwen @matt.mcewen.xyz · 02/02/2026
The Call for Submissions for QEC26 is now up: qec-conference.org/2026/call/ Follow the link to submit your paper or poster by March 6th AOE.
qec-conference.org
Call for Submissions
Submissions to QEC26 are done through EasyChair. Click here to make a submission on EasyChair Submissions for talks and posters are open until the end of Friday, March 6th AOE.
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Dripto Debroy @dripto.bsky.social · 03/02/2026
The call for submissions is now live on the QEC website! Deadline is March 6th, AoE. Please consider submitting and we'd appreciate it if you spread the word! :)
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James Wootton @decodoku.bsky.social · 30/01/2026
Logical qubits encoded in the fusion space of non-Abelian anyons in a generalized surface code. Not the most efficient way to build a quantum computer, but definitely the coolest! Quantinuum and co show how it's done on one of their H2 devices. arxiv.org/abs/2601.20956
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 30/12/2025
Great list from Dave. Also if you haven't visited the Museum of Jurassic Technologies you should.
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 29/12/2025
post a perfect album from the 90s that isn't nirvana, pearl jam, etc etc
Cover of the Portishead album Dummy. The cover is a deep blues. It shows a mysterious woman in blue lights (Beth Gibbons lead singer of Portishead)  with the word PORTISHEAD in the upper right corner in white and the word DUMMY in the lower left.
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Marco Cerezo @mvscerezo.bsky.social · 22/12/2025
🎆As the year ends, I want to remind everyone that our summer school applications are open! Please apply/encourage your students to apply here: academicjobsonline.org/ajo/jobs/31108 We also have a handshake link too🤝 : app.joinhandshake.com/emp/jobs/105... Shares appreciated!
academicjobsonline.org
Los Alamos National Laboratory, Condensed Matter and Complex Systems
Job #AJO31108, 2026 Los Alamos Quantum Computing Summer School, Condensed Matter and Complex Systems, Los Alamos National Laboratory, Los Alamos, New Mexico, US
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 22/12/2025
INTERNET makes your job easier, INTERNET gives your job to ROBOT, by me in 2015. If I drew it today, ROBOT would be AI.
Top: The Internet, depicted as an octopus, helping a human lift a barbell with the caption "INTERNET makes your job easier". Bottom: Octopus helping a robot lift the same weight with the caption while pushing the human away"INTERNET gives your job to ROBOT"
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 18/12/2025
Last stop in Korea the ICAMD conference in Busan. They had a booth to dress up in Joseon dynasty dress. Here I am dressed as a scholar.
A modern professor in the traditional Korean garb of a scholar in the Joseon dynasty. In front of the backdrop of a traditional Korean palace building.
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 17/12/2025
Third stop on the Korea Tour was Seoul National University. I met with Prof. Taehyun Kim and his group. Here we are in the Yb+ lab.
Two ion trapping professors in an ion trap lab not touching any optics.
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 16/12/2025
Next stop on the Korea tour was Sungkyunkwan University. I met with Profs. Yonuk Chong, Junki Kim, Dongmoon Min, and Seok-hyung Lee. Here I am with Prof. Chog, Prof. Kim and Dr. Quantum.
Three professors and Dr. Quantum, a large cartoon character,  by an example of the inside of a cryogenic chamber at SKKU
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 16/12/2025
First stop on Korea trip last week: Ewha University and the labs of Prof. Taeyoung Choi.
Two professors in winter coats at the bottom of a deep staircase between two buildings that rise up like canyon walls.Chalkboard in the physics department at Ewha Womans University with a cat in a box on it and an external observer. Physicists love chalkboards and drawing Schrödinger's thought experiment.
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 09/12/2025
Great visit to Tufts a few weeks ago. They have an open-rank job in Quantum Information / Computing theory. Open Positions | Department of Physics and Astronomy share.google/NosuSUs77OZU...
share.google
Open Positions | Department of Physics and Astronomy
Below are job opportunities within the Department of Physics and Astronomy. For additional employment opportunities at Tufts University, please visit Careers at Tufts.Full-time Positions:
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kenbrownquantum.bsky.social @kenbrownquantum.bsky.social · 06/12/2025
QUITS now out in Quantum quantum-journal.org/papers/q-202...
quantum-journal.org
QUITS: A modular Qldpc code circUIT Simulator
Mingyu Kang, Yingjia Lin, Hanwen Yao, Mert Gökduman, Arianna Meinking, and Kenneth R. Brown, Quantum 9, 1931 (2025). To achieve quantum fault tolerance with lower overhead, quantum low-density parity-...
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