activity
20202026
most citedThe Multi-round Process Matrix

5 citations · 8 across the 6 of their papers we have counts for

collaborators

8 papers

quant-ph2026

Fermions and the Tsirelson Problem in Real Quantum Theory

Timothee Hoffreumon, Mischa P. Woods

In a previous work, we showed that real quantum theory (RQT) cannot be experimentally distinguished from ordinary quantum theory (QT). In this paper, we investigate whether this in…

quant-ph2026

Clarifications on the Experimental Status of Real Quantum Theory

Timothée Hoffreumon, Mischa P. Woods

In our previous paper on the matter, we proved that real quantum theory (RQT) cannot be experimentally falsified without the experiment falsifying quantum theory (QT) as well. Our…

quant-ph2026

Quantum theory based on real numbers cannot be experimentally falsified

Timothée Hoffreumon, Mischa P. Woods

Whether the complex numbers of standard quantum theory are experimentally indispensable has remained open for decades. Real quantum theory (RQT), obtained by replacing complex ampl…

quant-ph2026

Supermaps on generalised theories

Matt Wilson, James Hefford, Timothée Hoffreumon

Categorical supermaps generalise higher-order quantum operations from finite-dimensional quantum theory to arbitrary circuit theories. In this paper, we establish the Yoneda lemma…

quant-ph2025

Quantum theory does not need complex numbers

Timothee Hoffreumon, Mischa P. Woods

Quantum theory was radically different from the theories of nature which came before it. One key difference was its use of complex numbers. This opened a longstanding debate over w…

quant-ph2023

Complete Graphical Language for Hermiticity-Preserving Superoperators

Titouan Carette, Timothée Hoffreumon, Émile Larroque +1

Universal and complete graphical languages have been successfully designed for pure state quantum mechanics, corresponding to linear maps between Hilbert spaces, and mixed states q…

quant-ph2022★ 3 cited

Projective characterization of higher-order quantum transformations

Timothée Hoffreumon, Ognyan Oreshkov

Transformations of transformations, also called higher-order transformations, is a natural concept in information processing, which has recently attracted significant interest in t…

quant-ph2020★ 5 cited

The Multi-round Process Matrix

Timothée Hoffreumon, Ognyan Oreshkov

We develop an extension of the process matrix (PM) framework for correlations between quantum operations with no causal order that allows multiple rounds of information exchange fo…