199 citations · 604 across the 32 of their papers we have counts for
4 papers · 2 filters
The disentangling power of unitaries
Lieven Clarisse, Sibasish Ghosh, Simone Severini +1
We define the disentangling power of a unitary operator in a similar way as the entangling power defined by Zanardi, Zalka and Faoro [PRA, 62, 030301]. A general formula is derived…
A generalization of boson normal ordering
Toufik Mansour, Matthias Schork, Simone Severini
In this paper we define generalizations of boson normal ordering. These are based on the number of contractions whose vertices are next to each other in the linear representation o…
Noncrossing normal ordering for functions of boson operators
Toufik Mansour, Matthias Schork, Simone Severini
Normally ordered forms of functions of boson operators are important in many contexts in particular concerning Quantum Field Theory and Quantum Optics. Beginning with the seminal w…
Universal quantum computation with unlabeled qubits
Simone Severini
We show that an n-th root of the Walsh-Hadamard transform (obtained from the Hadamard gate and a cyclic permutation of the qubits), together with two diagonal matrices, namely a lo…