What did we learn after almost twenty years of research on indefinite causality?

This talk focuses on optimization over moment and state polynomials, i.e., polynomials in noncommuting variables and formal moments or states of their products.

We implement a range of experiments—from quantum foundations through to quantum algorithms—using programmable photonic integrated circuits [1] driven by a semiconductor quantum-dot single-photon source [2].

Hugh Everett’s dissertation is commonly accepted as the origin of the Many-Worlds Interpretation. Remarkably, there is not a single mention of “worlds” or “branching” in the whole text.

Quantum communication in space allows to transfer quantum encoded signals over large distances and represents an important step towards building a global quantum internet.

Direct detection of dark matter (DM) poses one of the most urgent questions in fundamental physics.

The area of causal inference formalizes long-held human intuitions about cause and effect that were previously absent from scientific equations. By doing so, it solves misunderstandings that come from confusing correlation with causation, and finds…

In this talk, I will begin by introducing myself— where I come from and why I do what I do, namely extending the operational approach to quantum reference frames to the relativistic realm.

In the last few years, a new perspective on probabilistic reasoning has been extensively developed with the help of tools from category theory.