No-cloning theorem is fundamental for quantum mechanics and for quantum information
science that states an unknown quantum state cannot be cloned perfectly. However, we can …

Quantum cloning is a fundamental protocol of quantum information theory. Perfect universal
quantum cloning is prohibited by the laws of quantum mechanics, only imperfect copies …

Herein we continue the study of the representation theory of the algebra of permutation
operators acting on the $ n $-fold tensor product space, partially transposed on the last …

In this work, we revisit the problem of finding an admissible region of fidelities obtained after
the application of an arbitrary 1→ N universal quantum cloner which has been recently …

We consider the problem of determining the achievable region of the universal 1 → 2 1→ 2
asymmetric quantum cloning problem. This concerns the quantum cloning of any quantum …

In this paper we have found irreducible representations (irreps) of the algebra of partially
transposed permutation operators on the last subsystem. We give here the direct method of …

We study the problem of universal quantum cloning-taking several identical copies of a pure
but unknown quantum state and producing further copies. While it is well known that it is …

This paper revisits the universal asymmetric $1\to 2$ quantum cloning problem. We identify
the symmetry properties of this optimisation problem, giving us access to the optimal …

The linear superposition principle in quantum mechanics is essential for several no-go
theorems such as the no-cloning theorem, the no-deleting theorem and the no-superposing …

Entanglement in angular momentum degrees of freedom is a precious resource for quantum
metrology and control. Here we study the conversions of this resource, focusing on Bell pairs …