Henry Yuen

Associate Professor of Computer Science at Columbia University. Quantum information, computation, and cryptography.

[Henry Yuen @henryquantum]

@dakshita10 Exciting!!

[Henry Yuen @henryquantum]

@masonjames I appreciate it! What for, though? I wasn't involved with any of these developments; I'm just the messenger :)

[Henry Yuen @henryquantum]

A link to the UCLA harness, first developed for the FirstProof Second Batch evaluation, and then used to solve the unclonable encryption problem.

[Mason James @masonjames]

@0xaltyni @henryquantum For those interested: https://t.co/IBoVaE9yhK

[Seyoon Ragavan @seyoonragavan]

Now online at https://t.co/wzSznGRHEz!

[Henry Yuen @henryquantum]

I’m being facetious, but only partially so. A part of me does hope this could refocus more of our energy on understanding than producing.

[Henry Yuen @henryquantum]

@letonyo @QIP QIP will be all of us, sitting around the campfire, excitedly telling each other about the beautiful things we saw while piloting GPT.

[Seyoon Ragavan @seyoonragavan]

I'm excited to share two GPT-fuelled results from this month! The first, with Aparna Gupte, shows under a plausible number-theoretic conjecture that there exists s-server private information retrieval for database size n with communication exp(\tilde{O}((log n)^{1/s})). (1/3)

[Henry Yuen @henryquantum]

@marcotomamichel @letonyo @QIP Fingers crossed!

[Henry Yuen @henryquantum]

@letonyo @QIP For some reason it doesn't have that same cozy feel :)

[Henry Yuen @henryquantum]

What times we live in!

[Henry Yuen @henryquantum]

I'm happy to see the unclonable encryption problem solved; Prabhanjan Ananth and Amit Sahai report their findings, with the help of the UCLA harness (link below). This was a challenge for the quantum crypto community for the last 6 years.

[Henry Yuen @henryquantum]

In some sense, we only had one bullet in the gun, and that was the monogamy of entanglement analysis of Tomamichel, Fehr, Kaniewski, and Wehner (https://t.co/V7l5ddizlR). ChatGPT, apparently found a different way of analyzing unclonable encryption that did not reduce to TFKW.

[Min-Hsiu Hsieh @quantum_minhsiu]

Foxconn Quantum Seminar | Jul 24, 2026 10:00 Taipei / Jul 23 22:00 ET / 19:00 PT

Leo Orshansky (Columbia)
How To Track Qubits Through Space and Time (Or: Sailing in a Quantum Boat)

Join online: https://t.co/xc6YhzAH43
Paper: https://t.co/JsgEp6frFp

#Foxconn #QuantumComputing

[Dakshita Khurana @dakshita10]

Please submit your best proposals to the FOCS call for workshops! Proposals are due in just over two weeks.

https://t.co/ctmdSqoPQD

[Henry Yuen @henryquantum]

Leo's homepage: https://t.co/ULemzc3wXb.

[Henry Yuen @henryquantum]

Is there a way to distinguish between whether somebody is traveling between points in space time, or there are just identical, stationary clones at each of those points? The talented Leo Orshansky will explain how! (Hint: use quantum information)

[Min-Hsiu Hsieh @quantum_minhsiu]

Foxconn Quantum Seminar | Jul 10, 2026 16:00 Taipei / Jul 10 04:00 ET / 01:00 PT

Leo Orshansky (Columbia)
How To Track Qubits Through Space and Time (Or: Sailing in a Quantum Boat)

Join online: https://t.co/rsyuTHbHv7
Paper: https://t.co/JsgEp6frFp

#Foxconn #QuantumComputing