Our research group is seeking a talented and motivated Postdoctoral Researcher to join us in advancing the practical realisation of quantum technologies (including quantum error correction and mitigation). The deadline is 06 October 2025: tinyurl.com/bdhf3hzt

187 total entries for quant-ph on a single day suggests it might be time to split up quant-ph into at least two separate categories: arxiv.org/list/quant-p...

The accepted papers for QTML 2025 are listed here: qtml2025.cqt.sg/accepted-pap... #QTML2025

If you’re on academia dot edu, let me suggest that you strongly consider deleting your account.

Joint work with Kaiyuan Ji and Seth Lloyd now available at arxiv.org/abs/2509.08965 This paper identifies the communication capacity for sending information from the future to the past through a noisy closed timelike curve. The formula is reminiscent of mutual info but in general can be larger.

Fancy being (academic) neighbours? The University of Basel are hiring a tenure-track assistant professor in theoretical quantum computing: jobs.unibas.ch/offene-stell...

Also, sharing for friends: Anyone fancy a (minimal teaching load) tenure track position on quantum computing on a sunny island 🌤️ 🏝️? The Cyprus Institute are also hiring a tenure track assistant proff on quantum algorithms. onlinerecruitment.exelsyslive.com?c=6E7274A2-8... (Deadline next week)

Tomorrow will be Cornell Information Theory Day, with program available here: find.engineering.cornell.edu/cornell-info... Book of abstracts here: find.engineering.cornell.edu/files/2025/0...

Things would be a bit easier if the Oxford English dictionary could add the following words: infimization infimize supremization supremize I think mathematicians use these words regularly even though they are not official English words.

Joint work "Solving Optimal Power Flow using a Variational Quantum Approach" w/ Thinh Viet Le & Vassilis Kekatos: arxiv.org/abs/2509.00341 Optimal power flow (OPF) is an optimization problem central in the operation of electric power systems. We propose a variational q. paradigm for solving OPF.

From a Twitter research project to an independent rival — Bluesky’s journey under CEO Jay Graber shows how a decentralized, user-first platform gained millions users by prioritizing control & openness in social media. A true alternative in a billionaire-dominated space. www.cnbc.com/2025/08/29/b...

Hi, I am here! Will mostly post about Quantum Foundations/Computing and Quantum Music.

My colleague's submission was rejected from QCRYPT, but he indicated that several people have been coming up to him during the lunch breaks to tell him how useful his result is and how they have been making use of it in their own work. Does that make up for the rejection? :)

Our CEO @jfitzsimons.bsky.social presented our unique approach to quantum programming at Q2B Silicon Valley 2024. This year’s Q2B will see us showcase further technical breakthroughs and progress towards building the most capable and easy-to-use tools to write complex programs for quantum hardware.

Quiz: Who is the scientist on the left whose name is well known in quantum information theory?

I'll be attending SQuInT 2025: squint.unm.edu/events/2025.... Anyone else on bsky planning to go? (out of curiousity)

Here is what we did this summer: arxiv.org/abs/2508.09103 All students in attached image are in 1st year undergrad or high school. Due to frozen funds, some volunteered & others were funded by Cornell Engineering. Thanks for your dedication & thx to other coauthors for helping to complete the work

My colleagues and I have issued an update of our paper: arxiv.org/abs/2412.02134 New title: Sample-based Hamiltonian and Lindbladian simulation: Non-asymptotic analysis of sample complexity Updated results summarized in attached table

Was fun to record a podcast for @intelligence2.bsky.social with the wonderful host Shini Somara on our book "Why nobody understands quantum physics": scientists and writers, unite! open.spotify.com/episode/6sBG...

#IPAM (the institute for pure and applied mathematics) is facing a critical shortfall for operating expenses due to an unexpected suspension of NSF funding www.ipam.ucla.edu/news/nsf-fun... . Donations for emergency continuity of operations funding can be made at giving.ucla.edu/Campaign/Donat

Donation link here: www.ipam.ucla.edu/news/nsf-fun...

I'm happy to see support for non-commutative algebra, which is very useful for Taylor expansions of Hamiltonians with non-commuting terms, such as in the Baker–Campbell–Hausdorff formula. en.wikipedia.org/wiki/Baker%E... Sometimes I had to implement this by hand, so it's nice to have it built in.

The QIP 2026 call for papers is out! QIP 2026 will be held in Riga, Latvia from January 24–30, 2026. See you there! qip2026.lu.lv

Previous historic examples of deliberate destruction of scientific institutions from within a country. www.theatlantic.com/science/arch...

Terence Tao (@teorth.bsky.social) has written a thread on Mastodon about the impact of the federal grant freeze to UCLA, particularly to his own field of Mathematics. UCLA's IPAM (Institute of Pure and Applied Mathematics) could shut down entirely mathstodon.xyz/@tao/1149568...

For the math folks on here: NSF has suspended Terry Tao's grant. www.nsf.gov/awardsearch/...

Today is Cornell Quantum Day: quantum.cornell.edu/cornell-quan... We have a schedule of external and student speakers lined up, with a blend of theory and experiment

from scirate.com/arxiv/2502.0... : "our proposed algorithm can be interpreted as a tâtonnement dynamic" It is always a good strategy in academia to use technical terms that no one else knows, in order to pique the curiosity of readers

It took Quantum Journal three months and two reminders to invite reviewers for my submission there. Within one hour of receiving the invitation to review, the invited reviewers confirmed. To stay relevant, Quantum Journal will certainly need to improve significantly in this regard.

Ian George, @christophhirche.bsky.social, Theshani Nuradha, & I have issued an update of our q. Doeblin coefficients paper: arxiv.org/abs/2503.22823 Main changes consist of an expanded section 8.5 on mixing, indistinguishability, & decoupling times of quantum Markov chains. See attached images

I am curious about QI people who use LyX to help write their research papers and math notes. I noticed @quantum-journal.bsky.social has a LyX template, which suggests the # of people using it is sizable. Please reply here if you do. I recently switched from Scientific Workplace to LyX & am impressed

Theshani Nuradha & I issued an important update of our paper on query complexity of q. channel discrimination: arxiv.org/abs/2504.12989 Building on arxiv.org/abs/2506.13686, we gave a tight characterization of sample complexity of state discrimination & query complexity of cq channels. See images

Postdoc opening in my group: careers.nus.edu.sg/job/Research...

I posted my slides on resource theory of asymmetric distinguishability: zenodo.org/records/1577... Joint work w/ @wangxinfelix.bsky.social from 2019 & came up in discussions at #ISIT2025. This work gave the first proper operational interpretation for smooth max-relative entropy

RIP Ray Laflamme, gone too soon. Ray was a stellar scientist, the founding director of ⁦‪the IQC‬⁩ and ⁦‪of CIFAR's‬⁩ Quantum Information program, but more importantly a warm & generous human who built community and helped many (particularly junior researchers). May his memory be a blessing.

I am now at the International Symposium on Information Theory #ISIT2025 in Ann Arbor, Michigan. Feel free to reach out if you would like to catch up or have a research discussion

Devastated to see the news about Weizmann Institute: apnews.com/article/isra... The prof. shown in the image leads an ion-trap q. computing lab: www.weizmann.ac.il/complex/ozer... Affiliated Q. info. scientists include Rotem Arnon-Friedman & Thomas Vidick: centers.weizmann.ac.il/quantum-scie...

Two recent works joint w/ Hemant Mishra and @ludovicolami.bsky.social are ripe for quantum optics experimentalists to consider: arxiv.org/abs/2303.04949 arxiv.org/abs/2505.20447 1st paper proves that the pretty good measurement for a bosonic Gaussian ensemble is a bosonic Gaussian measurement 1/2

We have an opening for a research scientist in the quantum algorithms team at Quantinuum. This is permanent in London or Cambridge, UK. Details: jobs.eu.lever.co/quantinuum/2...

Share your grant cancellation with congress forms.office.com/pag...

The US Administration has indefinitely blocked *all* student visa applicants from getting a visa interview. Worldwide, unconditional, no end date. All. International students are crucial to the US university system, American innovation, and future US prosperity.

This is a very strong reason we, in quantum information, should try to submit most / if not all of our manuscripts to Quantum Journal. At least the community has some say over the process and authors are in charge of formatting their own manuscripts. Paid journals cannot be trusted.

Congrats to Theshani Nuradha on a successful PhD thesis defense for Cornell ECE! arxiv.org/search/quant...

Congrats to Soorya Rethinasamy on a successful PhD thesis defense for Cornell AEP! arxiv.org/search/quant...

Group photo at Myers Point in Ithaca, NY

Congrats to Vishal Singh on a successful PhD thesis defense for Cornell AEP! arxiv.org/search/quant...

“(…) I started to notice gender imbalance in math (…). I hope that by continuing to pursue a research career, I can inspire other young women to (…) dive into mathematics with confidence.” – Laura Lewis ➡️ hermathsstory.eu/laura-lewis #WomenInMaths #WomenInQuantum @laura-lewis.bsky.social

I am grateful to my colleagues who log in to overleaf and even add just a comma or space to the LaTeX file for our project. This is useful, because it places our project to the top of my list in overleaf and reminds me and other collaborators of its existence... :)