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Jiahui Liu

@jiahuiliu.bsky.social
154 followers 39 following 10 posts

Researcher in quantum computing, cryptography and TCS. She/her.

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Reposted by Jiahui Liu
Hanlin Ren @h4n1in.bsky.social · 09/10/2026
Thoughts: Given the recent advance in math, many "standard" (e.g., number-theoretic / lattice) assumptions are threatened. We need public-key encryption (and other crypto) with *universal* security --- if *any* secure PKE exists, our PKE is secure. (1/2)
ia.cr
On White-Box Learning and Public-Key Encryption
We consider a generalization of the Learning With Error problem, referred to as the white-box learning problem: You are given the code of a sampler that with high probability produces samples of the f...
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Reposted by Jiahui Liu
Clément Canonne @ccanonne.github.io · 01/08/2026
- go for exposition. Write, write well (if necessary, learn how to). Papers are meant to disseminate knowledge to others. Reading your work, things should "click": this is important, this is novel, this is the key takeaway. We'll no longer be competing on pages of derivations, that "flex" is gone 3/
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Clément Canonne @ccanonne.github.io · 01/08/2026
- stop the public hand-wringing and doomerism. Things are worrying and scary, yes, but this is (y)our job to navigate it (you/we have the stability and, allegedly, the experience). We can afford to think about it and try things out! If we project despair publicly, then how is that going to go? 3/
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Clément Canonne @ccanonne.github.io · 01/08/2026
🧵To seniors: - move away from bean-counting (easy, right?). E.g., when evaluating CVs or grants or applicants, ask for the top 3 pubs, with a paragraph explaining why these are important. Hiring on a CV of 50 pubs was always sort of meaningless, now it's become meaningless-er (!) and gameable. 2/
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Clément Canonne @ccanonne.github.io · 01/08/2026
- Relatedly, go for something you are deeply passionate or curious about: if the next couple years are going to be (possibly) a struggle, at least don't let it be about things you don't really like or care about! 5/ (end of personal, biased advice for junior TCS researchers)
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Clément Canonne @ccanonne.github.io · 01/08/2026
"We're all worried," as what it means to do research (in my field, Theoretical CS) seems to be shifting, and shifting fast. What to do? Senior researchers must lead by example, knowing that not everything will pan out. What I'm suggesting below may not work everywhere, but here's my own advice: 1/
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Clément Canonne @ccanonne.github.io · 02/07/2026
Guest post by John Abowd, @aloni-bologna.bsky.social, Cynthia Dwork, Jae June Lee, @jsarathy.bsky.social, @adamsmith.xyz and Salil Vadhan on the US govt's latest move to ban "noise injection" (at the core of all meaningful privacy protections) from all official statistics: scottaaronson.blog?p=9902
scottaaronson.blog
An American privacy emergency: Guest post from Cynthia Dwork et al.
Scott’s foreword: Cynthia Dwork is Gordon McKay Professor of Computer Science at Harvard, and a pioneer in the fields of differential privacy and algorithmic fairness. On my recent travels to…
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Reposted by Jiahui Liu
Lance Fortnow @lance.fortnow.com · 27/06/2026
If the frontier AI models have limited rollouts, will we see two tiers of mathematicians and scientists, those who have access, and those who don't?
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Reposted by Jiahui Liu
Lance Fortnow @lance.fortnow.com · 10/06/2026
With AI making progress in settling mathematical conjectures, is a proof of P ≠ NP around the corner? No, you need to respect the difficulty of P v NP.
blog.computationalcomplexity.org
Respect the P v NP Problem
There are two ways to look at the P v NP problem, as a formal mathematically defined conjecture as a Clay Millennium Prize Problem, and as t...
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Reposted by Jiahui Liu
Clément Canonne @ccanonne.github.io · 02/06/2026
A list of principles put forth by mathematicians, for mathematicians and other researchers, regarding the use of AI in research. "Number #9 will surprise you!" leidendeclaration.ai
leidendeclaration.ai
Leiden Declaration on Artificial Intelligence and Mathematics
This declaration calls for action to address the challenges posed by the use of artificial intelligence within mathematics research.
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Reposted by Jiahui Liu
Clément Canonne @ccanonne.github.io · 21/05/2026
The OpenAI breakthrough on the unit distance problem seems genuinely impressive to my semi-layman eye. (It is!) One possible takeaway, though, is that if you throw an incredible amount of money and resources at focused research, there WILL be impressive progress. I wish we tried that, too.
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Clément Canonne @ccanonne.github.io · 27/05/2026
The #STOC2026 TheoryFest will include an online poster session, held on Gather.Town, for those unable to attend in person! Details, and how to submit a poster: acm-stoc.org/stoc2026/cal... (Deadline ⏰ Friday, June 12) An initiative led by Ian Mertz and Ninad Rajgopal!
acm-stoc.org
STOC 2026 Online Poster Session
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Reposted by Jiahui Liu
Clément Canonne @ccanonne.github.io · 25/05/2026
Currently teaching my students "probability amplification by repetition" by sending the same announcement 10 times on the class forum.
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Jiahui Liu @jiahuiliu.bsky.social · 25/05/2026
Happy long weekend! It seems we all agree AI has greatly improved productivity. I think we should just normalize long weekends. Let everyone work 4 days a week, rather than firing 20% of the staff.
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Clément Canonne @ccanonne.github.io · 31/03/2026
Hash tables, or how to leverage the sinking feeling of loneliness you get when you look at the sky
The basic idea of hash tables is that “the universe is a big place,
but it’s mostly empty."
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Reposted by Jiahui Liu
Clément Canonne @ccanonne.github.io · 24/03/2026
Remember: it's alright to be annoyed at things, especially what seems broken or dysfunctional. We all are! What matters though is to then do something constructive with your frustration, for instance writing mildy cryptic yet well worded posts on social media
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Jiahui Liu @jiahuiliu.bsky.social · 24/03/2026
We also welcome remote working interns!
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Jiahui Liu @jiahuiliu.bsky.social · 24/03/2026
Fujitsu research (located in Santa Clara, CA) is hiring summer interns. Apply if you are a PhD student in the quantum computing areas, especially if you are interested in quantum algorithms, quantum error correction and compilation technologies, etc: www.jobs.global.fujitsu.com/job/Research...
jobs.global.fujitsu.com
Research Intern
Research Intern
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Reposted by Jiahui Liu
Simons Institute for the Theory of Computing @simonsinstitute.bsky.social · 21/02/2026
Congratulations to our colleague John Wright, who has received a 2026 Sloan Fellowship! chemistry.berkeley.edu/news/seven-u...
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Reposted by Jiahui Liu
Clément Canonne @ccanonne.github.io · 17/02/2026
Preparing for my first lecture (Algorithm Design), I added a slide this year. Can't really not address it.
A slide, with title" The (AI)lephant in the room", and a single sentence on the slide:

"What is the point of learning, designing, and analysing algorithms anymore?"
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Reposted by Jiahui Liu
Clément Canonne @ccanonne.github.io · 29/11/2025
Something worrying me: many seem to change their research direction out of FOMO, reacting to (the obvious) recent trend: "If I don't do this, someone else will do it!" One of the key perks we have in academia is the freedom to set our own agenda.* If someone else can—and WILL—do it, why would you?
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Clément Canonne @ccanonne.github.io · 18/09/2025
Talk at #TQC2025 by Aparna Gupte (MIT): "can we have quantum One-Time Programs, i.e., programs that can be evaluated only once?" No. But, good news, yes! arxiv.org/abs/2411.01876
Aparna, on the stage, in front of a slide recalling the no-cloning theorem and why, as a result, there may be hope for quantum OTP (although they are impossible classically)
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Jiahui Liu @jiahuiliu.bsky.social · 23/06/2025
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Online Parallels (mastodon @onlineparallels) @onlineparallels.bsky.social · 17/12/2024
We are launching an 𝐮𝐧𝐨𝐟𝐟𝐢𝐜𝐢𝐚𝐥 and experimental online parallel event for the conference ITCS25, aimed at everyone who cannot attend the conference in person for whatever reasons. (1/2) sites.google.com/view/itcs202... #ITCS25 #ITCS2025 #OnlineParallels
sites.google.com
ITCS'25 online parallel
What we do Welcome! This site is about an online parallel event for the conference ITCS'25 that aims to provide an inclusive platform for the TCS researchers unable to attend the conference in person....
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Reposted by Jiahui Liu
Beth Sutton-Ramspeck @bsutton-ramspeck.bsky.social · 08/12/2024
Imagine there's no countries It isn't hard to do; Nothing to kill or die for And no religion, too. Imagine all the people Livin' life in peace. You may say I'm a dreamer But I'm not the only one. I hope someday you'll join us And the world will be as one. John Lennon, 10/9/40-12/8/80
Time Magazine cover, headlined, "When the Music Died: John Lennon."
Image of John Lennon.
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Jiahui Liu @jiahuiliu.bsky.social · 09/12/2024
Peer reviews of the quantum cryptography community have been making me very depressed and nihilistic recently..... Wrote this just to vent.... gardenofforkingpath.blogspot.com/2024/12/some...
gardenofforkingpath.blogspot.com
Some thoughts after QIP reviews....
Peer reviews of the quantum cryptography community at the moment: Reviewers from other areas: "Not my area, not interested so reject" Revi...
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Jiahui Liu @jiahuiliu.bsky.social · 28/11/2024
A new work with @henryyuen.bsky.social and Saachi Mutreja. We show a classical oracle separation of QMA and QCMA, the long-standing problem on the power of quantum proofs over classical proofs, based on a quantum pseudorandomness conjecture. arxiv.org/abs/2411.14416
arxiv.org
QMA vs. QCMA and Pseudorandomness
We study a longstanding question of Aaronson and Kuperberg on whether there exists a classical oracle separating $\mathsf{QMA}$ from $\mathsf{QCMA}$. Settling this question in either direction would y...
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