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Markus Heinrich @markusheinrich.bsky.social · 8h

QIP deadline. I expect the same (or even worse) tomorrow :)

Reposted by Markus Heinrich

Quantiki @quantiki.bsky.social · 2d

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

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

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Markus Heinrich @markusheinrich.bsky.social · 26d

I know that at least one submission was way ahead deadline (#280). Any last minute submissions @zoltanzimboras.bsky.social ?

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Markus Heinrich @markusheinrich.bsky.social · 27d

@dulwichquantum.bsky.social

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Markus Heinrich @markusheinrich.bsky.social · 27d

Very interesting work, thanks for the summary, Pieter! But you forgot the mandatory meme!
bsky.app/profile/dulw...

Dulwich Quantum Computing @dulwichquantum.bsky.social · Dec 2

We should make it the official quantum Bluesky policy that the release of every new paper must be announced by a meme summarizing the main result. Here are some examples... 🧵

Zoe Holmes @qzoeholmes.bsky.social · Dec 2

In the spirit of friendly academic shit posting...

(Or because we lack imagination?)

We picked another IBM experiment to benchmark our small-angle Pauli propagation alg.

This time: arxiv.org/abs/2404.08053

@quantummanuel.bsky.social's plot below is for TFI on 127 qubits in a heavy hex topology

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Reposted by Markus Heinrich

Robin Kothari @robinkothari.bsky.social · Aug 6

The QIP 2026 call for papers is out! QIP 2026 will be held in Riga, Latvia from January 24–30, 2026. See you there!
qip2026.lu.lv

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Reposted by Markus Heinrich

Andreea Lefterovici @andreealefterovici.bsky.social · Jul 18

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 Universität Hannover, hosted by Prof. Robert Raussendorf.

🗓️ Save the date: August 27–29, 2025

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Markus Heinrich @markusheinrich.bsky.social · Jul 18

LLM?

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Reposted by Markus Heinrich

Barbara Terhal @bterhal.bsky.social · Jul 2

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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Reposted by Markus Heinrich

Victor V. Albert @vva.bsky.social · Jul 3

From Barbara Terhal: 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 by all via a Zoom link. www.quantuminfo.physik.rwth-aachen.de/cms/~bmmwed

Symposium | Institut für Quanteninformation | RWTH Aachen University | DE

July 17-18, 2025 Ford Saal, Super C RWTH Aachen University

www.quantuminfo.physik.rwth-aachen.de

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Markus Heinrich @markusheinrich.bsky.social · Jul 1

Many thanks for the great work to my coauthors Lorenzo Grevink, @haferjonas.bsky.social, Jonas Helsen, Marcel Hinsche, Tommy Schuster, and Zoltan Zimboras. This work was started during the workshop on random quantum circuits 2024 in Amsterdam, stay tuned for the next one 2026 in Cologne!

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Markus Heinrich @markusheinrich.bsky.social · Jul 1

See also the great parallel work by M. West, D. García-Martín, N.L. Diaz, M. Cerezo, and M. Larocca. scirate.com/arxiv/2506.1...

No-go theorems for sublinear-depth group designs

Constructing ensembles of circuits which efficiently approximate the Haar measure over various groups is a long-standing and fundamental problem in quantum information theory. Recently it was shown th...

scirate.com

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Markus Heinrich @markusheinrich.bsky.social · Jul 1

Weaker notions of randomness are nevertheless possible in log depth: we show anticoncentration and construct additive-error state designs for Cliffords, orthogonals, and symplectics. We give linear lower bounds for matchgates.

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Markus Heinrich @markusheinrich.bsky.social · Jul 1

For generalizations of the popular 'brickwork' circuits, we even give linear lower bounds on relative-error state designs independent of the architecture. In this case, lightcones do not matter. In both constructions, we exploit the existence of factorizing psd operators in the group's commutant.

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Markus Heinrich @markusheinrich.bsky.social · Jul 1

We give lower bounds on additive-error group designs and relative-error state designs generated by local circuits over the respective groups. We show that it is necessary that lightcones contain all qubits, implying linear depth lower bounds in 1D and log depth in all-to-all.

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Markus Heinrich @markusheinrich.bsky.social · Jul 1

Some statistical features of Haar unitaries can be well approximated in log depth, exponentially faster than previously thought. We give evidence that this is a 'truly quantum' effect by deriving linear lower bounds for orthogonal, Clifford, symplectic, matchgate groups
scirate.com/arxiv/2506.2...

Will it glue? On short-depth designs beyond the unitary group

We provide a range of results on several groups of broad interest in quantum information science: the Clifford group, the orthogonal group, the unitary symplectic groups, and the matchgate group. For ...

scirate.com

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Markus Heinrich @markusheinrich.bsky.social · Jun 30

Looks like a great list! Could you please add me as well :)?

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Markus Heinrich @markusheinrich.bsky.social · Jun 29

Looking forward to many wonderful discussions!

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Markus Heinrich @markusheinrich.bsky.social · Jun 27

Happy birthday to this great place for science! And cheers to everyone currently staying there :)

Juan José García-Ripoll @jjgarciaripoll.bsky.social · Jun 27

Happy 30th Birthday to the Benasque Science Center!

Centro de Ciencias de Benasque Pedro pascual @ccbpp.bsky.social · Jun 27

www.heraldo.es/noticias/ara...

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Reposted by Markus Heinrich

Quantiki @quantiki.bsky.social · Jun 16

8th International Conference for Young Quantum Information Scientists

www.quantiki.org/conference/8...

8th International Conference for Young Quantum Information Scientists | Quantiki

www.quantiki.org

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Reposted by Markus Heinrich

Henrik Wilming @arrr.de · May 14

There is now an official announcement: The TIB has archived the current status of the arXiv:

blog.tib.eu/2025/05/14/p...

Protecting Science: TIB builds Dark Archive for arXiv - TIB-Blog

Research and science are international; it is not for nothing that we speak of international specialist communities. Although a service such as arXiv is operated by an institution based in the USA, na...

blog.tib.eu

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Markus Heinrich @markusheinrich.bsky.social · Apr 29

It is the metaplectic representation restricted to the compact symplectic subgroup, so why not.

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Reposted by Markus Heinrich

Steve Flammia @sflammia.bsky.social · Apr 28

I'm hiring a postdoc! If you'd like to work with me on quantum learning, error correction, quantum algorithms, and FTQC at Virginia Tech in the Washington, DC metro area, please apply here: careers.pageuppeople.com/968/cw/en-us...

Details | Postdoctoral Associate - Computer Science | Careers | Division of Human Resources | Virginia Tech

careers.pageuppeople.com

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Markus Heinrich @markusheinrich.bsky.social · Apr 27

Fully-funded four-year PhD position on random circuits and shadows for many-body physics. Interested in working on fundamental problems and take it all the way to applications? Join my new team at U Cologne and Matteo Rizzi's group at FZ Jülich! Deadline: 18 May
www.fz-juelich.de/de/karriere/...

PhD Position – Efficient randomization methods for quantum applications

The Peter Grünberg Institute for Quantum Control (PGI-8) at the Forschungszentrum Jülich specializes in novel optimization strategies for emerging quantum technologies. These emerging technologies aim...

www.fz-juelich.de

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Markus Heinrich @markusheinrich.bsky.social · Apr 24

For details on the updated paper see @pbassler.bsky.social 's post here
bsky.app/profile/pbas...

pbassler.bsky.social @pbassler.bsky.social · Apr 18

We provide an efficient method to engineer arbitrary many-body Hamiltonians also robust against various dominant errors.
I will present these results next Wednesday at #QCTIP2025.
arxiv.org/abs/2410.19903

General, efficient, and robust Hamiltonian engineering

Implementing the time evolution under a desired target Hamiltonian is critical for various applications in quantum science. Due to the exponential increase of parameters in the system size and due to ...

arxiv.org