JK. Zeng

fundamental physics concepts, like observables, state vectors, vector potentials, etc., you can’t measure any of them. You only measure some correlations. Yet our entire understanding of the universe is based on these practically nonexistent concepts.
let that sink in.

I haven’t even left Riga and im already missing it

one of the better ways to attend conferences is to collect selfies with random people I meet, talk, or hangout with

cool sticker I got at #qip2026

elmo is on fire with the words i am aliveee ALT: elmo is on fire with the words i am aliveee

Riga makes me feel sooooo alive

heading to Riga for #qip2026 tonight!

imo if I come up with research ideas independently, the chance of it exactly coincides with someone else's work is quite low. We may be covering the same problem but mostly likely the attack angle will be different

i feel that a lot of academic collabs are diplomatic

it's not a positive thing for the field that quantum computing has captured Elon Musk's attention.

how to identify bs posts on quantum computing
- posts not from researchers with strong publication records are bs
- posts hyping a quantum era within this decade are bs
- posts involving geopolitical topics are bs (100%)
- posts that are non-academic are mostly likely bs

Over half of the quantum people on X are hypsters and should not be followed by anyone. Things look better here on Bluesky.

I find some people hyping quantum race as the new nuclear arms race. I don’t think these people have any understanding of what a quantum computer is capable of. Plus, it’s very disrespectful to the 200000 lives lost in Hiroshima and Nagasaki.

Wow, that’s a really large group. How do you manage to keep track of everyone’s research?

i keep thinking that academic may not be a good career path for adhd folks, mostly due to our poor short-term memory. we can have fantastic research ideas but putting them out to papers can be extremely challenging.

Fundamental Costs of Noise-Robust Quantum Control: Speed Limits and Complexity Noise is ubiquitous in quantum systems and is a major obstacle for the advancement of quantum information science. Noise-robust quantum control achieves high-fidelity operations by engineering the evo...

i wrote something new

#quantum

arxiv.org/abs/2510.07183

prep food for the whole week seal properly and you are good to go

omg quantum bullshit detector is back!

done.
Yes, it’s doable, from virtually nothing (some very vague idea), to a paper, in one month, all by oneself, working alone.

Nobel Prize Laureate Roger Penrose, Yvette Fuentes, and myself, request your help in order to save an archive of incredible scientific and historical value. Please raise awareness by *sharing*, or *contribute*:

www.crowdfunder.co.uk/p/roger-penr...

The fact that high-speed rail is not a thing in the US is mind-boggling. When I was a student flying was too expensive (and not very accessible if you live in remote places) and driving for longer than 3 hours was painful

why y'all choosing bluesky over fediverse instances like mastodon or something

life is getting increasingly stressful as time goes by

"Any set of at most r points cannot escape some closed hemisphere of S^{r−1}."
--guru JK's wisdom

welcome! sure I'll keep an eye on this quantum music thing

it's weird that whenver I feel that I can prove something, that whatever thing instantly becomes trivial and apparently not worth proving

gorgeous! a few years back I did a road trip in Utah and Arizona, monument valley seemed to be closed at the time due to covid and I didn't get chance to go see myself, such a pity!

I use my GPT5 pro so hard I want to give it a hug

当我试图证明一个scaling law是指数的时候，我发现了也许这个复杂性可以是常数的
而当我真的去试着证明这个scaling law是常数的，我又发现我怎么也证不出来，它好像真的是指数的

"Don't use Hilbert-Schmidt norm. Embrace Operator norm instead."
-- Guru JK

it’s likely due to inherent flaws of humanity