Frederik Hahn's Avatar

Frederik Hahn

@frederikhahn

frederikhahn.eu https://orcid.org/0000-0002-9349-4075

80
Followers
111
Following
54
Posts
03.12.2024
Joined
Posts Following

Latest posts by Frederik Hahn @frederikhahn

Preview
What is next in quantum advantage? We are now at an exciting point in our process of developing quantum computers and understanding their computational power: It has been demonstrated that quantum computers can outperform classical …

In the last post of a 3-part series, Dominik Hangleiter highlights the importance of efficient verification of quantum advantage, and assesses the prospects for achieving it soon.
quantumfrontiers.com/2026/02/28/w...

28.02.2026 20:30 πŸ‘ 17 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0
Preview
Has quantum advantage been achieved? Part 2: Considering the evidence Welcome back to: Has quantum advantage been achieved? In Part 1 of this mini-series on quantum advantage demonstrations, I told you about the idea of random circuit sampling (RCS) and the experimen…

In part 2 or a 3-part series, Dominik Hangleiter continues his thoughtful assessment of the evidence for quantum advantage in random-circuit-sampling experiments.
quantumfrontiers.com/2026/01/25/h...

25.01.2026 18:33 πŸ‘ 23 πŸ” 3 πŸ’¬ 0 πŸ“Œ 1
Preview
The computational two-way quantum capacity Quantum channel capacities are fundamental to quantum information theory. Their definition, however, does not limit the computational resources of sender and receiver. In this work, we initiate the st...

Last year, I became interested in the question what happens if we impose computational efficiency onto information theory. In our latest paper, we analyze how this changes the amount of information that can be transmitted over a channel -- spoiler alert: a lot! scirate.com/arxiv/2601.1...

23.01.2026 15:21 πŸ‘ 14 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

100% agree. Especially since we have author IDs that are matched to the papers when they are claimed!

23.01.2026 16:54 πŸ‘ 13 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
Post image

Our introductory webinar is now open for registration!

ℹ️ Quantum Internet Use Cases: Overview and Status
🎀 Michele Amoretti | QIA Use Case Team Lead and Director of Quantum Software Laboratory at University of Parma
πŸ“… 11 February 2026, 15:00-15:30 CET
πŸ”— meet.zoho.eu/ssbb-fvm-xzm

Sign up today!

15.01.2026 10:02 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Preview
Has quantum advantage been achieved? Recently, I gave a couple of perspective talks on quantum advantage, one at the annual retreat of the CIQC and one at a recent KITP programme. I started off by polling the audience on who believed …

Dominik Hangleiter weighs in with an informative post about a much debated question: Has quantum advantage been achieved? This is the first post in a three-part series.
quantumfrontiers.com/2026/01/06/h...

06.01.2026 21:15 πŸ‘ 24 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0

Herzlichen GlΓΌckwunsch!

09.12.2025 11:59 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

The largest fundamental science agency in Europe will save €1.4 million annually by breaking free from Clavariate Analytics' huge databases of references and citations.

"We have worked for free to lock ourselves collectively into a paid system", one head of the CNRS explains - but no more! πŸŽ‰

02.12.2025 15:12 πŸ‘ 10 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0

This comment has a strong guns-don't-kill-people vibe.

22.11.2025 17:02 πŸ‘ 56 πŸ” 11 πŸ’¬ 1 πŸ“Œ 0
Post image

PhD position on quantum computing at at ETH Zurich, advised by Dominik Hangleiter and co-advised by Renato Renner

www.quantiki.org/position/phd...

07.10.2025 08:59 πŸ‘ 9 πŸ” 3 πŸ’¬ 3 πŸ“Œ 0
07.10.2025 06:55 πŸ‘ 7 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

Congratulations!

22.09.2025 18:42 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I don't know, but your question made me think of this Goethe quote:

"Alles Gescheite ist schon gedacht worden, man muss nur versuchen, es noch einmal zu denken." - "Everything sensible has already been thought of; one just has to try to think it again."

Are new ideas better than old ones?

19.09.2025 18:38 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Isn't the point of the figure more that there is no guarantee that post quantum protocols cannot be broken by either algorithmic discoveries or progress in hardware development?
Perhaps the inclination of the blue line segments is exaggerated, but the important point is that they are not horizontal.

18.09.2025 11:19 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Sounds like the papers are writing themselves on time then!

13.09.2025 11:33 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

πŸ₯³I am very happy to have been awarded an ERC Starting Grant that I will use to start my own group and explore the large-scale entanglement properties of complex quantum systems.

This would not have been possible without my fantastic collaborators and supervisors. A big "thank you" to all of you! πŸ™

04.09.2025 10:21 πŸ‘ 28 πŸ” 3 πŸ’¬ 3 πŸ“Œ 0

This gets even worse when translating between languages with a dictionary πŸ‘€

14.08.2025 18:54 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

... and teleport him to the dark side of the moon!

13.08.2025 19:35 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Eudaimonia - Wikipedia

I did not expect to learn the difference between eudaimonia and eudaemonia, when I decided to participate in the www.avibagla.com/blueskydicti... challenge today πŸ˜…

en.wikipedia.org/wiki/Eudaimo...
en.wikipedia.org/wiki/Eudaemo...

07.08.2025 05:13 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
ChatGPT and the Meaning of Life: Guest Post by Harvey Lederman Scott Aaronson’s Brief Foreword: Harvey Lederman is a distinguished analytic philosopher who moved from Princeton to UT Austin a few years ago. Since his arrival, he’s become one of my …

I wrote about automation and the meaning of life, as a guest post on Scott Aaronson's Shtetl-Optimized. (1/5)

scottaaronson.blog?p=9030

05.08.2025 11:15 πŸ‘ 46 πŸ” 5 πŸ’¬ 1 πŸ“Œ 4

Looks like a rather deceptive advance to me.

05.08.2025 08:17 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
QIP2025

#Quantum #QIP2025
The team @qip2025.bsky.social has uploaded the QIPv2025 talks

www.youtube.com/@QIP2025

Enjoy rewatching your favorites!

27.07.2025 23:02 πŸ‘ 35 πŸ” 11 πŸ’¬ 2 πŸ“Œ 0

Ich bin auch dafΓΌr VerΓΆffentlichungen wieder auf Deutsch zu schreiben πŸ€“

(I'm also in favor of going back to German for writing papers πŸ€“)

22.07.2025 08:14 πŸ‘ 6 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Are you a student or early-career researcher in quantum computing or quantum information? Then the following is for you.

We're organising a focused, community-driven conference at Leibniz UniversitΓ€t Hannover, hosted by Prof. Robert Raussendorf.

πŸ—“οΈ Save the date: August 27–29, 2025

18.07.2025 06:57 πŸ‘ 9 πŸ” 5 πŸ’¬ 1 πŸ“Œ 1
Preview
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 β€” the "Director's Cut" of Understanding Quantum Information and Computation is now available.

arxiv.org/abs/2507.11536

16.07.2025 11:06 πŸ‘ 154 πŸ” 34 πŸ’¬ 5 πŸ“Œ 2
Video thumbnail

πŸ•΅οΈ Want to blow the whistle without risking your safety?

Today, true anonymity online doesn’t exist. But in the future, #QuantumInternet could make it possible.

πŸŽ₯ Learn how Quantum Whistleblowing works in episode 2 of #EverydayQuantum.

16.06.2025 12:05 πŸ‘ 2 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

Correct!

14.06.2025 14:34 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

But are there worse things to do there other than prepare slides? πŸ–οΈ

10.06.2025 13:59 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

If there are currently 19856025 bitcoin and around 8.2 billion people in the world, would that imply that around 0,00242 β‚Ώ is a fair amount of bitcoin?

29.05.2025 12:44 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

If it's the latter, one of the worst things you can do is tell some people about the results and then ask them not to share them on social media. Unless, of course, your reason for doing so is to generate hype for results that don't actually exist yet, and you don't want anyone else to work on them?

21.05.2025 09:06 πŸ‘ 6 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0