Alfonso Maiellaro

Apr 15, 2024 | link.aps.org | Francesco Romeo |Sezione di Napoli |Alfonso Maiellaro

We demonstrate that the well-known (k↑,−k↓) Bardeen-Cooper-Schrieffer interaction, when considered in real space, is equivalent to an infinite-range Penson-Kolb pairing mechanism coexisting with an attractive Hubbard term. Driven by this discovery and aiming at exploring the conduction properties, we investigate the dynamics of fermionic particles confined in a ring-shaped lattice.

Mar 28, 2023 | link.aps.org | Alfonso Maiellaro |Francesco Romeo |Sezione di Napoli

Abstract Squashed entanglement and its universal upper bound, the quantum conditional mutual information, are faithful measures of bipartite quantum correlations defined in terms of multipartitions. As such, they are sensitive to the fine-grain structure of quantum systems. Building on this observation, we introduce the concept of quantum conditional mutual information between the edges of quantum many-body systems.