David Wierichs
@dwierichs.bsky.social
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Quantum (Info|Computing|Software) Scientist. Developing and enjoying
https://pennylane.ai/
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David Wierichs
Manuel Rudolph
3 months ago
Last week, we published a paper that really excites me: "Circuit compression for 2D quantum dynamics" Using Pauli propagation, we (Matteo) were able to compress Trotter circuits for systems up to 30x30 with depth reductions of x2 to x13. Link:
arxiv.org/abs/2507.01883
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David Wierichs
Barbara Terhal
3 months ago
On July 17-18 a small symposium "Dreams of Quantum" will be held in honor of David DiVincenzo's work and retirement at RWTH Aachen. The event can be attended via Zoom by all. Information about the program of speakers & the Zoom link can be found at
www.quantuminfo.physik.rwth-aachen.de/cms/~bmmwed
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David Wierichs
Marc Lanctot
3 months ago
Uploaded (replaced) a paper to arXiv today for the first time in a while.. and discovered some new features! 🤩 ✅ You can choose your compiler (incl. pdflatex) ✅ You can select the top-level TeX file ✅ There is a new "Review Files" stages that detects which files are unused! 🥰 and more: ... 1/3
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David Wierichs
Marco Cerezo
3 months ago
🚨Excited to share our new paper "Characterizing quantum resourcefulness via group-Fourier decompositions" from last year's LANL Quantum Computing summer School📘
arxiv.org/abs/2506.19696
!
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Characterizing quantum resourcefulness via group-Fourier decompositions
In this work we present a general framework for studying the resourcefulness in pure states for quantum resource theories (QRTs) whose free operations arise from the unitary representation of a group....
https://arxiv.org/abs/2506.19696
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David Wierichs
Maris Ozols
4 months ago
Open position at QuSoft / University of Amsterdam: Assistant Professor in Quantum Computing and Simulation for Quantum Chemistry and Materials
qusoft.org/qusoft-vacan...
Deadline: 14 July 2025
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QUSOFT Vacancies – Qusoft
https://qusoft.org/qusoft-vacancies/
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David Wierichs
Mario Krenn
4 months ago
We have several open, fully-funded PhD and Postdoc positions at my group, now at the University of Tübingen. Please
#RT
and share with potential candidates! Generally: AI for scientific discoveries in physics 🔥.
mariokrenn.wordpress.com/wp-content/u...
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https://mariokrenn.wordpress.com/wp-content/uploads/2025/05/callkrenn202505-1.pdf
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David Wierichs
Korbinian Kottmann
7 months ago
What I gather from the most recent DWAVE saga. TLDR: I don't think the spoofers have a done a very good or convincing job here 🤷
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David Wierichs
Markus Heinrich
7 months ago
QIP 2026 is in Riga. Dates for QIP 2027 are preliminary
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David Wierichs
Giuseppe Carleo
8 months ago
Looking for a talented postdoc to join my group (the Computational Quantum Science Lab) at EPFL, in Lausanne 🇨🇭 Research Topics Include: Neural Quantum States, Many-Body Systems, Ab-Initio & Quantum Chemistry...etc Start: Fall 2025, excellent conditions Apply:
www.epfl.ch/labs/cqsl/jo...
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Job Opportunities at CQSL
At the Computational Quantum Science Lab we typically have several openings yearly (at the PhD/ Postdoc level). Applications are reviewed twice a year, at the beginning of April and at the beginning o...
https://www.epfl.ch/labs/cqsl/job-opportunities-at-cqsl/
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David Wierichs
Zlatko Minev
8 months ago
Scaling and networking a modular photonic quantum computer from @Xanadu in @Nature (Open Access paper)
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Scaling and networking a modular photonic quantum computer - Nature
A proof-of-principle study reports a complete photonic quantum computer architecture that can, once appropriate component performance is achieved, deliver a universal and fault-tolerant quantum…
https://www.nature.com/articles/s41586-024-08406-9
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David Wierichs
Quantiki
8 months ago
PhD opening at QuantumFutur Junior Research group, hosted by the Helmholtz-Zentrum Dresden-Rossendorf lead by Werner Dobrautz
@dobrautz.bsky.social
#QuantumComputing
#QuantumSimulation
#QuantumChemistry
www.quantiki.org/position/phd...
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PhD Student in Quantum Computing at Helmholtz-Zentrum Dresden-Rossendorf | Quantiki
https://www.quantiki.org/position/phd-student-quantum-computing-helmholtz-zentrum-dresden-rossendorf
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David Wierichs
Quantiki
8 months ago
Postdoc opening in Quantum Computing for Quantum Chemistry at QuantumFutur Junior Research group, hosted by the Helmholtz-Zentrum Dresden-Rossendorf lead by Werner Dobrautz
@dobrautz.bsky.social
#QuantumComputing
#QuantumSimulation
#QuantumChemistry
www.quantiki.org/position/pos...
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Postdoc in Quantum Computing for Quantum Chemistry at Helmholtz-Zentrum Dresden-Rossendorf | Quantiki
https://www.quantiki.org/position/postdoc-quantum-computing-quantum-chemistry-helmholtz-zentrum-dresden-rossendorf
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Check out this very nice demo by
@qottmann.bsky.social
on a constructive compilation routine for Hamiltonian simulation by Kökcü et al. This is the Cartan, or KAK, decomposition in practice :) Demo:
pennylane.ai/qml/demos/tu...
Original work:
journals.aps.org/prl/abstract...
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Fixed depth Hamiltonian simulation via Cartan decomposition | PennyLane Demos
Using Cartan decomposition and the KAK theorem to decompose unitary gates following the approach in the paper Fixed Depth Hamiltonian Simulation via Cartan Decomposition (arXiv2104.00728) with a code ...
https://pennylane.ai/qml/demos/tutorial_fixed_depth_hamiltonian_simulation_via_cartan_decomposition
9 months ago
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David Wierichs
Korbinian Kottmann
9 months ago
Seeing our software and resources be used by other researchers and practitioners in the qc space gives me extreme "academic pride", for a lack of better words 🥲 Here's to more well-documented code in 2025
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David Wierichs
Zoltán Zimborás
9 months ago
To reach some consensus about the prospects of near-term (late nisq and early fault tolerant) quantum computing, we had a 3-day discussion event (“Quantum Now”) in Lapland with both optimists and pessimists. This continued at SeeQA 2024 in Oxford. See our conclusions here
arxiv.org/abs/2501.05694
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Myths around quantum computation before full fault tolerance: What no-go theorems rule out and what they don't
In this perspective article, we revisit and critically evaluate prevailing viewpoints on the capabilities and limitations of near-term quantum computing and its potential transition toward fully fault...
http://arxiv.org/abs/2501.05694
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David Wierichs
Dulwich Quantum Computing
10 months ago
In case you're a science & technology journalist, here's our guide on how NOT to write a news article about Google's new "mindboggling" quantum computing chip.
www.theguardian.com/technology/2...
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Google unveils ‘mindboggling’ quantum computing chip
Chip takes minutes to complete tasks that would otherwise take 10,000,000,000,000,000,000,000,000 years
https://www.theguardian.com/technology/2024/dec/09/google-unveils-mindboggling-quantum-computing-chip
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David Wierichs
Marco Cerezo
10 months ago
🚨Applications for LANL's 2025 Quantum Computing Summer School are open! Please apply here 👇
lanl-summer-school-programs.wizehive.app/program/quan...
Reposts appreciated!
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Program
https://lanl-summer-school-programs.wizehive.app/program/quantum-computing-summer-school-fellowship
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David Wierichs
Rishi Sreedhar
10 months ago
Hey
#Quantumsky
👋🏾 This is an attempt at indexing the growing quantum community here on Bluesky. Please let me know if you'd like to be added to the list. Genuinely happy to see what looks like a successful migration from the birdsite 😄
go.bsky.app/VHXg1yi
add a skeleton here at some point
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David Wierichs
Earl Campbell
10 months ago
Is it taking off or will we all be back on X next month. Keep posting and find out.
add a skeleton here at some point
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David Wierichs
John Scalzi
10 months ago
I open my Bluesky feed and it is full of really cool people saying really smart things and being really passionate about really interesting stuff. I like this version of social media, and the world. Thanks, folks.
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After an admittedly failed first attempt for me personally, it somehow feels quite nice to be part of this (still small, mildly active) bubble, this time around. I'm so intrigued to see whether we'll manage to keep things alive as long as we need to, and within bounds after that! 🦋
10 months ago
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David Wierichs
Dulwich Quantum Computing
10 months ago
We normally don't promote products of other quantum startups, but
@qottmann.bsky.social
has written some really nice explanations of dynamical Lie algebras
bsky.app/profile/qott...
and the time-ordered exponential
bsky.app/profile/qott...
which we do recommend!
add a skeleton here at some point
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David Wierichs
Korbinian Kottmann
10 months ago
It drives me nuts that the notation of the time-ordered exponential implies that it is a function Texp(∙) with an integral as its argument inside 🤬 Full rant:
pennylane.ai/blog/2024/09...
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What is the time-ordered exponential and why you should stop using it | PennyLane Blog
A highly opinionated quick rant about the time-ordered exponential operator, why its notation is misleading, why the time-ordering business is unnecessary and why we should just stop using it.
https://pennylane.ai/blog/2024/09/time_ordered_exponential
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David Wierichs
Korbinian Kottmann
10 months ago
Welcome to all the new
#quantumcomputing
(and adjacent) people moving here 😍
@dwierichs.bsky.social
@gppcarleo.bsky.social
@quantumearl.bsky.social
@decodoku.bsky.social
@abohrdt.bsky.social
@danielgc25.bsky.social
@vasmer.bsky.social
@physicssteve.bsky.social
@dulwichquantum.bsky.social
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David Wierichs
Korbinian Kottmann
10 months ago
I tried to write up an intro to (dynamical) Lie algebras for quantum practicioners as the topic keeps poping up
pennylane.ai/qml/demos/tu...
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Introducing (Dynamical) Lie Algebras for quantum practitioners | PennyLane Demos
A gentle introduction to Lie theory covering the basics of Lie algebras and Lie groups in the context of quantum computing.
https://pennylane.ai/qml/demos/tutorial_liealgebra
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David Wierichs
Annabelle Bohrdt
10 months ago
Let’s start here with something very exciting 🚀 we’ve been working on: neural quantum states 🤖 simulations of the ground state of the two dimensional t-J model across the full doping range, led by Hannah & Annika:
arxiv.org/abs/2411.10430
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David Wierichs
Earl Campbell
10 months ago
Some follow backs in first few minutes, thanks :) So some signs of life here…
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David Wierichs
Dulwich Quantum Computing
11 months ago
Great paper on what lessons quantum computing community can learn from the mistakes made in the 90s when benchmarking parallel computers.
arxiv.org/abs/2411.08860
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How NOT to Fool the Masses When Giving Performance Results for Quantum Computers
In 1991, David Bailey wrote an article describing techniques for overstating the performance of massively parallel computers. Intended as a lighthearted protest against the practice of inflating bench...
https://arxiv.org/abs/2411.08860
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David Wierichs
Lost in Superposition
almost 2 years ago
"Being a physics researcher is very demanding but very rewarding as well. I am strongly against the idea that you need to devote your whole life to your career. You can have a family and a life outside physics and still be successful in your field." I feel this is sometimes not stressed enough.
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From Measuring Electrons to Inspiring Underrepresented Scientists
This year, Anne L’Huillier won the Wolf Prize in Physics for her work on ultrafast lasers. Now she hopes her success will help inspire a new generation of women to take up physics.
https://physics.aps.org/articles/v15/84
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David Wierichs
Felix Leditzky 🏳️🌈🏳️⚧️
almost 2 years ago
Call for applications for J. L. Doob Research Assistant Professorship (3 years) at University of Illinois Math. Application deadline: December 1. Quantum folks, please consider applying and mention quantum faculty (Marius Junge, Amanda Young, myself) in the app!
www.mathjobs.org/jobs/list/23...
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MathJobs from the the American Mathematical Society
Mathjobs is an automated job application system sponsored by the AMS.
https://www.mathjobs.org/jobs/list/23375
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David Wierichs
Philippe Faist
almost 2 years ago
I'm looking forward to giving this place a try. Let's hope the quantum community discussions can thrive again! And special thanks to
@hyperboieva.bsky.social
@qottmann.bsky.social
and everyone else who has been providing codes for everyone to join :)
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Thanks
@qottmann.bsky.social
for the invite 🎉 Feels good around here.
almost 2 years ago
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