I am happy to announce that our newest work on non-local quantum computation (NLQC) has made it to the arXiv: scirate.com/arxiv/2606.2.... For me personally, the main motivation to study these tasks comes from quantum position verification, but it has links to diverse areas such as quantum gravity.

Equivalence of non-local computation tasks beyond Clifford operations

Non-local quantum computation (NLQC) studies how two collaborating players can implement channels on distributed systems using a single simultaneous round of quantum communication and shared entanglem...

scirate.com

PhD opportunity in QIT in Grenoble. I am advertising a project through the QuanG2 call, at the interface of nonlocality, self-testing, computationally bounded devices, complexity, and crypto. My project is among the topics offered: phdquantumgrenoble.univ-grenoble-alpes.fr/phd-applicat...

New paper! This time, together with René Koßmann and René Schwonnek we looked into using routed Bell tests for device-independent quantum key distribution: scirate.com/arxiv/2603.2...

Device independent quantum key distribution with robust self-tests

Device-independent quantum key distribution (DIQKD) provides a model of quantum key distribution with minimal assumptions and highly abstract theoretical building blocks. Although DIQKD frees us from ...

scirate.com

We are very happy to share that Grenoble will host TQC, one of the most important quantum computing conferences, in 2027! Excited to welcome the community in the heart of the Alpes! tqc-conference.org/2026/2027/

Just in time for the holidays: We have a new paper out about how to use techniques from non-commutative polynomial optimization for measurement incompatibility: scirate.com/arxiv/2512.1...

Inclusion constants for free spectrahedra with applications to quantum incompatibility

Building on the matrix cube problem, inclusions of free spectrahedra have been used successfully to obtain relaxations of hard spectrahedral inclusion problems. The quality of such a relaxation is qua...

scirate.com

New preprint on Hamiltonian Learning of Coulomb potentials and smooth potentials in continuous space arxiv.org/abs/2510.08471 Thanks to my collaborators, @hippoquantus.bsky.social , Tim Möbus, and Oliver Siebert!

Learning Coulomb Potentials and Beyond with Fermions in Continuous Space

We present a modular algorithm for learning external potentials in continuous-space free-fermion models including Coulomb potentials in any dimension. Compared to the lattice-based approaches, the con...

arxiv.org

Happy to announce our new paper "Certifying and learning quantum Ising Hamiltonians" scirate.com/arxiv/2509.1..., together with Matthias C. Caro, Francisco Escudero Gutiérrez, Aadil Oufkir, and Cambyse Rouzé. We are focusing in this paper on 2-local Hamiltonians (so a bit more general than Ising).

Certifying and learning quantum Ising Hamiltonians

In this work, we study the problems of certifying and learning quantum Ising Hamiltonians. Our main contributions are as follows: Certification of Ising Hamiltonians. We show that certifying an Ising ...

scirate.com

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

I am currently looking for a PhD student who would like to work on position-based cryptography. Details can be found here: andreasbluhm.eu/wp-content/u... Please spread the word!

New day, new paper, this time on Heisenberg-limited Hamiltonian learning for continuous variable systems with engineered dissipation: scirate.com/arxiv/2506.0.... The idea is to use strong dissipation to restrict the Hamiltonian evolution onto a convenient subspace where we can learn it.

Heisenberg-limited Hamiltonian learning continuous variable systems via engineered dissipation

Discrete and continuous variables oftentimes require different treatments in many learning tasks. Identifying the Hamiltonian governing the evolution of a quantum system is a fundamental task in quant...

scirate.com

We have a new preprint out on the topic of quantum position verification and non-local quantum computation (NLQC): scirate.com/arxiv/2505.2.... We are comparing different NLQC tasks and find reductions between them (in the sense of if I can do task 1, then I can do task 2 with an extra EPR pair).

A complexity theory for non-local quantum computation

Non-local quantum computation (NLQC) replaces a local interaction between two systems with a single round of communication and shared entanglement. Despite many partial results, it is known that a cha...

scirate.com

CNRS is opening a call for CPJ (chair de professeur junior), a kind of tenure track with very good conditions. One position is open for quantum computing, and one of the hosting labs is LIG in beautiful Grenoble! The application deadline is July 14th. www.ins2i.cnrs.fr/fr/cnrsinfo/...

Liste des postes de chaires de professeur junior de CNRS Sciences informatiques 2025

Le CNRS recrute des chercheurs et chercheuses sur des Chaires de professeur junior (CPJ) dans plusieurs domaines relatifs aux sciences informatiques.

ins2i.cnrs.fr

If you are interested in quantum non-classicality, you might enjoy our new preprint: scirate.com/arxiv/2504.1.... In it, we use the framework of general probabilistic theories to connect different forms of non-classicality, in particular measurement incompatibility, steering, and Bell non-locality.

Factorization of multimeters: a unified view on nonclassical quantum phenomena

Quantum theory exhibits various nonclassical features, such as measurement incompatibility, contextuality, steering, and Bell nonlocality, which distinguish it from classical physics. These phenomena ...

scirate.com

FZ Jülich is hiring a PhD candidate which will be co-supervised by myself at U Cologne. Interested in benchmarking/characterisation, in working in a highly collaborative environment, and want to see your work being used in experiments? Consider applying! www.fz-juelich.de/en/careers/j...

If you're an undergraduate student interested in the mathematics of quantum physics and general relativity, consider the Tübingen International M.Sc. Program in #MathematicalPhysics www.math.uni-tuebingen.de/en/mmp Opens for applications today

Master in Mathematical Physics

math.uni-tuebingen.de

Summer school Mathematics and Physics of Quantum Computing and Quantum Learning, on the island of Porquerolles, France www.quantiki.org/conference/m...

PhD Opportunities – Quantum Algorithms for Quantum Chemistry. Join the Quantum for Life Center at the University of Copenhagen as PhD student! Work on quantum algorithms for chemistry with Prof. Matthias Christandl & co-supervision by Prof. Markus Reiher (ETH Zurich). 1/n

⏰ Beyond IID 2025 Conference just announced sites.google.com/view/beyondi...

We're looking for a new addition to our group. Drop me a message if you're interested!

Quantiki@quantiki.bsky.social · last yr.

The research group of Prof. Christoph Hirche @christophhirche.bsky.social at the University of Hannover (Germany) is looking for a motivated PhD student. #QuantumInformationTheory #QuantumComputing www.quantiki.org/position/phd...

Happy to announce a new preprint together with Ángela Capel, Pablo Costa Rico and Anna Jenčová, in which we study a class of states we call Belavkin-Staszewski Quantum Markov Chains scirate.com/arxiv/2501.097 1/7