JK. Zeng

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

IMO almost every popular view of gender massively downplays the intensity and virulence of anti-effeminacy as a form of gender violence and prejudice.

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

I hate to admit but that 200 bucks chatgpt pro worth every single cent of it

just added “PhD-level expert” to my bio

i don’t have much experience with quantum info theory but I do kinda wanna check out Latvia so I’ll try write a quantum info paper in a month

AQIS is a nice conference. Everyone is a nerd with confidence

sleeping is like a time portal
it takes you to some unknown futuristic world
a better one, hopefully

成功人士不用蓝蝴蝶🦋

a good amount of established people seem to be not using any social media
something we all should be aware of

I actually love being data harvested by big tech companies.
In fact I don’t view it as them data harvesting me, but I am actively feeding them.
I am feeding the future.
It’s all part of the plan: digital immortality.

i wonder if personal sites are still relevant in 2025

Understanding Quantum Information and Computation This is a course on the theory of quantum computing. It consists of 16 lessons, each with a video and written component, covering the basics of quantum information, quantum algorithms (including query...

After 3 1/2 years of work my course on quantum computing is finally finished — the "Director's Cut" of Understanding Quantum Information and Computation is now available.

arxiv.org/abs/2507.11536

phones and social media erase half of everyones life. at mass scale
that is basically mass murder

found myself looking kinda androgynous in that mysterious mirror maybe i’ll consider leveling up my pronouns to match the bluesky vibe