New preprint! Erik and Moha join with former group member Jessica and propose a quantum metrology algorithm that optimally estimates parameters. They study parallel, sequential, indefinite causal, and even higher-order operations arxiv.org/abs/2602.09655

New preprint: Santiago worked on this with Eliza while visiting here as part of his master's studies. They propose a new quantum secret direct communication protocol based on choices of measurement bases

arxiv.org/abs/2602.05972

We also have four principal investigators leading smaller groups, with topics ranging from many-body physics to metrology to information processing to time in quantum theory

Elizabeth Agudelo's theoretical quantum optics group studies continuous variable systems, quantum phase spaces, and how they relate to quantum information

Nicolai Friis's EntaQCT group studies, among many other things, entanglement in all its guises, including its connection to quantum computing

Next there's Gláucia Murta's QFunC group, who specialise in various forms of quantum communication and cryptography

Last week we reintroduced ourselves as QuOI: a research unit made of many quantum theory groups. Now let's introduce each group.

First, there's Marcus Huber's QuIT group, for quantum info, thermodynamics and all their fun interactions (the photo is of the whole unit, not just one group!)

New preprint! Master's student Jhoan joins Esteban, Tom, and Eliza in writing a lovely set of lecture notes that serve as an introduction to quantum optics. This also includes a large list of Python code snippets that simulate well-known problems in quantum optics arxiv.org/abs/2601.20619

In an upcoming thread we'll go through and introduce each of the current group leaders of our division, but for now, please do check us out at our website to learn more about all of our amazing research

quoi-theory.at

What was once a single theory group at TU Wien's Atominstitut has now expanded to become a whole theory division at the institute, with several independent research groups. For a while we used the QuIT label to describe both Marcus's group and the division as a whole, but that needed to change

Hey quantum Bluesky! Allow us to reintroduce ourselves! You may know us as QuIT: Marcus Huber's Quantum Information and Thermodynamics group at TU Wien. But we're so much more than that, and it's time our name reflected it.

So say hello to... 𝗤𝘂𝗢𝗜?

quoi-theory.at

New preprint! Master's student Jian joins Marcus, Nico, and Pharnam in finding a new way to model the impact of noise on quantum thermodynamic protocols, with interesting implications for certain cooling algorithms
arxiv.org/abs/2601.16317

New preprint! QuITter Jakob brings us this cool new work on randomness generation in the classical and quantum realms. Featuring a very fun title page image: arxiv.org/abs/2503.05528