John Preskill @preskill
Theoretical physicist @Caltech, Director of @IQIM_Caltech preskill.caltech.edu Pasadena, California Joined October 2010-
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We're excited @Caltech and @TeamOratomic about mitten codes, which we hope will accelerate the journey to practical quantum computing. An extraordinary team worked on this project -- I especially appreciate brilliant contributions from Caltech students Aditya Bhardwaj, Richard Ma, and Nadine Meister. arxiv.org/abs/2607.28795
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Mark Wise liked to say that @Caltech is "heaven for professors." And professors like Mark make Caltech "fairly heavenly" even for students. quantumfrontiers.com/2026/07/26/wis…
John Preskill retweeted
Welcome feedback on my new quantum disclosure law & tech policy paper. Thanks to @preskill for helpful input. SSRN: papers.ssrn.com/sol3/papers.cf… #QuantumComputing #QuantumCryptography #PostQuantumCryptography #Cybersecurity #TechnologyPolicy #LawTech #BerkeleyLaw #StanfordLaw
John Preskill retweeted
I learned about @MarkWiseSays from John Preskill's eulogy for Mark. I heard all the tweets in his voice; and I laughed so hard, I cried. @preskill x.com/preskill/statu…
My friend Mark Wise quantumfrontiers.com/2026/07/18/my-…
Thoughtful discussion @SimonsInstitute led by @RobertHuangHY on the topic researchers everywhere are talking about: How to respond to the automation of research? youtube.com/watch?v=vT5blu…
John Preskill retweeted
this is a timely talk with the whole research community (at least in QIP) currently pondering this very question: "How to Respond to the Automation of Research" by Hsin-Yuan Huang @RobertHuangHY (Caltech & @TeamOratomic )
My friend Mark Wise quantumfrontiers.com/2026/07/18/my-…
Mark Wise 1953-2026. Hero of theoretical particle physics, master of effective field theory, much loved teacher, mentor, and colleague, my best friend for over 40 years. An immeasurable loss.
@fisherastro Dario took three classes from me, too. Privacy laws prevent me from revealing his grades, but I think it is safe to say that he did very well.
I feel guilty when I ask Claude to do something I could have done myself (but would have taken me much longer). Claude is so busy, I hate to be annoying. I suppose I'll get over it.
John Preskill retweeted
We at @khoslaventures made the largest initial investment yet, as we did in OpenAI, into @TeamOratomic after we looked at a dozen Quantum starts in a decade. On its way to solve Shor's algorithm, the true symbol of getting to "quantum computing" FIRST. oratomic.com. Join them in building the world’s first fault-tolerant quantum computer capable of useful applications and a fundamentally new model of computation that could have consequences far beyond what we can predict today
That feeling when you meet someone for the first time with whom you have already co-authored a paper. quantumfrontiers.com/2026/06/28/the…
John Preskill retweeted
Today, Caltech and JPL welcome renowned astrophysicist, acclaimed author, and transformative leader, Ray Jayawardhana as the Institute’s tenth president! He brings a fierce commitment to building on Caltech’s legacy of discovery and exploration. tinyurl.com/5y3j6ebx
John Preskill retweeted
Ginsburg Center for Quantum Precision Measurement Construction Timelapse
On Wednesday we dedicated @Caltech's Ginsburg Center for Quantum Precision Measurement. We won’t be moving in for a few more months, but it’s going to be a beautiful facility. We’re very grateful to the donors, and to President Tom Rosenbaum and former Division Chair Fiona Harrison, who have been champions of this project. It was a great day. caltech.edu/about/news/gin…
My friend Charles Cao taught me about the importance of magic in quantum spacetime: "Without magic, things are a little too simple." Thanks, @walkingthedot, for the well-written article. quantamagazine.org/entanglement-b…
We thought that @SenAdamSchiff would want to hear about how quantum computing will benefit the world. But actually he is just really, really curious about quantum entanglement (and knows a lot about it)! Thanks for visiting @Caltech, Senator. It was fun. youtube.com/watch?v=gWhL4y…
Even on the bad days, there are good things to celebrate and enjoy. quantumfrontiers.com/2026/05/20/nic…
I'm quite amazed, and deeply honored, to see my name on this distinguished list of "AI Pioneers." Thank you, @BostonGF and AI World Society, for recognizing that quantum science can contribute to "an age of human flourishing." bostonglobalforum.org/publication/16…
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