Discretizing spacetime is often a natural step towards modelling physical systems. For
quantum systems, if we also demand a strict bound on the speed of information propagation …

Quantum cellular automata are arrays of identical finite-dimensional quantum systems,
evolving in discrete-time steps by iterating a unitary operator G. Moreover the global …

It is known that the classical framework of causal models is not general enough to allow for
causal reasoning about quantum systems. While the framework has been generalized in a …

The distributions of the diagonal elements of the Wigner's reaction K ˆ matrix for open
systems with violated time reversal T invariance in the case of large absorption are for the …

The causal structure of a unitary transformation is the set of relations of possible influence
between any input subsystem and any output subsystem. We study whether such causal …

We extend the circuit model of quantum computation so that the wiring between gates is soft-
coded within registers inside the gates. The addresses in these registers can be …

We present a compositional algebraic framework to describe the evolution of quantum fields
in discretised spacetimes. We show how familiar notions from Relativity and quantum …

This chapter is devoted to a discussion on the semantics of quantum programming
languages. We will discuss two main paradigms: the usual, standard co-processor model …

This thesis (Habilitation\a diriger des recherches) presents some of my research
contributions since my Ph. D defense in 2008. I have had the chance to participate in the …

We present an extensive experimental study of the distributions of the real and imaginary
parts of the off-diagonal elements of the scattering matrix S ̂ and the Wigner's reaction K ̂ …