Felix Leditzky 🏳️‍🌈🏳️‍⚧️

I hope this post will serve as a reminder of our contribution in this line of work, since quite a few follow-up papers have not mentioned our paper.

Approximate Unitary $k$-Designs from Shallow, Low-Communication Circuits Random unitaries are useful in quantum information and related fields but hard to generate with limited resources. An approximate unitary $k$-design is an ensemble of unitaries and measure over which ...

This is based on the two concurrent and independent papers arxiv.org/abs/2407.07876 (LaRacuente, Leditzky) and arxiv.org/abs/2407.07754 (Schuster, Haferkamp, Huang).

YouTube video by QIP2025 Nicholas LaRacuente / Thomas Schuster: "Approximate Unitary k-Designs..." / "Random..." (QIP 2025)

Here's my co-author Nick LaRacuente and colleague Thomas Schuster giving a merged long plenary talk at QIP 2025 on constructing relative-error approximate unitary designs in logarithmic depth: youtu.be/_iuWjwMG5Jw?...

Reaction to quoted post. User A: This is gonna result in mutliple involuntary admissions to the psych ward. Absolutely stupid idea. User B: "Exploring the intersection of tech and spirituality" gives me hope that tech bros being taken out of circulation will be a net good for society

🤣

Dean Nadya Mason has been recognized with the Richtmyer Memorial Lecture Award for outstanding contributions to physics and for effectively communicating those contributions to physics educators

Congratulations to UChicago PME Dean Nadya Mason for being recognized with the 2025 Richtmyer Memorial Lecture Award for her outstanding contributions to physics and for effectively communicating those contributions to physics educators.

Read more: pme.uchicago.edu/news/uchicag...

Awesome, congrats JR!

Sounds great, hoping for the best 🤞

How was the interview?

Gut Ding braucht Weile!

Sign in the Munich subway showing the quote from Lise Meitner given in the post.

"Freie Wissenschaft ist ebenso selbstverständlich wie freies Atmen." - Lise Meitner

Free science is as natural as breathing freely.

Seen in a Munich subway station.

Donut = coffee mug, everything else is just weird counter-examples ^^

NB: I'm not speaking in any official manner on behalf of Quantum here.

A fairly severe bottleneck at Quantum at the moment is to find a knowledgeable editor who can handle a submission. This delay was likely due to struggles to find one.

I agree that this should be improved. One measure Quantum is taking is to accept apps from prospective editors on a rolling basis.

Freedom from kings.
Freedom from fascism.
Power to the people forever. ♥️

Happy Independence Day 🇺🇸

That sounds great! Added to my list.

Paul Hilaire and I are recruiting a PhD student to work on demonstrations of fault-tolerant protocols for near-term quantum hardware (photonics & cold atoms). The focus is on quantum error correction, low-overhead schemes, and actual implementation on hardware

I'd be surprised to not find a single Smiths or Cure album on the list. Are you looking at the updated one or the old one?

honest question

Would it really be that much less engaging to say "This thing behaves like a small quantum computer and today we are going to program it."?

I've come to really like this album

What is some music that's important to you that's not on there?

By far my favorite Beatles album! Rubber Soul hinted the way, but Revolver is when they started being *really* creative.

IQC and Waterloo mourn the loss of Raymond Laflamme | Institute for Quantum Computing | University of Waterloo Raymond Laflamme, a trailblazer in quantum information processing and pioneer of the Institute for Quantum Computing (IQC) at the University of Waterloo, died on June 19 after a lengthy battle with ca...

Raymond Laflamme 1960-2025. A great scientist, renowned for his pioneering contributions to quantum error correction. A great leader, founding director of the Institute for Quantum Computing. A great colleague and teacher whose legacy continues to inspire us.
uwaterloo.ca/institute-fo...

What is common knowledge in your field but shocks outsiders?

Quantum computers are useful for a very limited set of questions and those questions are mostly of interest to physicists and chemists.

View from The Ha Beach bar in Hersonissos, Crete, Greece

Saradari Beach, Crete, Greece

There are worse places to prepare talk slides 😍 #Crete

It's either an autograph or a heart beat, I'm not quite sure yet.

Signed copy of Ben Rhodes's "After the Fall - The rise of authoritarianism in the world we've made"

Autograph page and a bookmark from Powell's in Portland, OR

I went to @powells.bsky.social in Portland, OR (great bookstore, check it out!) and secured a signed copy of @rhodesben.bsky.social's "After the Fall" 🤗

Klingt spannend, danke!

Empfehlung?

The Multiverse: a Philosophical Introduction This book is a philosopher's introduction to the idea that our universe is just one of many universes. I present and assess three versions of the idea: one version from philosophy, and two from physic...

Every book / paper should start like this...
"I write these words, believing that I have always lived in one world: and that it is the same world in which my family, friends, historical figures, all humankind, including you, dear reader, live or have lived or will live."
arxiv.org/abs/2505.23639