The mixing-demixing phase diagram of ultracold heteronuclear mixtures in a ring trimer

A Richaud, A Zenesini, V Penna - Scientific reports, 2019 - nature.com
We derive the complete mixing-demixing phase-diagram relevant to a bosonic binary
mixture confined in a ring trimer and modeled within the Bose-Hubbard picture. The mixing …

Phase separation can be stronger than chaos

A Richaud, V Penna - New Journal of Physics, 2018 - iopscience.iop.org
We investigate several dynamical regimes characterizing a bosonic binary mixture loaded in
a ring trimer, with particular reference to the persistence of demixing. The degree of phase …

Two-species boson mixture on a ring: A group-theoretic approach to the quantum dynamics of low-energy excitations

V Penna, A Richaud - Physical Review A, 2017 - APS
We investigate the weak excitations of a system made up of two condensates trapped in a
Bose-Hubbard ring and coupled by an interspecies repulsive interaction. Our approach …

Residual entropy and critical behavior of two interacting boson species in a double well

F Lingua, A Richaud, V Penna - Entropy, 2018 - mdpi.com
Motivated by the importance of entanglement and correlation indicators in the analysis of
quantum systems, we study the equilibrium and the bipartite residual entropy in a two …

Pathway toward the formation of supermixed states in ultracold boson mixtures loaded in ring lattices

A Richaud, V Penna - Physical Review A, 2019 - APS
We investigate the mechanism of formation of supermixed solitonlike states in bosonic
binary mixtures loaded in ring lattices. We evidence the presence of a common pathway …

The phase-separation mechanism of a binary mixture in a ring trimer

V Penna, A Richaud - Scientific Reports, 2018 - nature.com
We show that, depending on the ratio between the inter-and the intra-species interactions, a
binary mixture trapped in a three-well potential with periodic boundary conditions exhibits …

Interference, spectral momentum correlations, entanglement, and Bell inequality for a trapped interacting ultracold atomic dimer: Analogies with biphoton …

C Yannouleas, BB Brandt, U Landman - Physical Review A, 2019 - APS
Aiming at elucidating similarities and differences between quantum-optics biphoton
interference phenomena and the quantum physics of quasi-one-dimensional double-well …

Spatial phase separation of a binary mixture in a ring trimer

V Penna, A Richaud - Journal of Physics: Conference Series, 2019 - iopscience.iop.org
We investigate the phase separation mechanism of bosonic binary mixtures in spatially-
fragmented traps, evidencing the emergence of phases featuring a different degree of …

Binary mixture of Bose-Einstein condensates in a double-well potential: Berry phase and two-mode entanglement

M Günay - Physical Review A, 2020 - APS
A binary mixture of Bose-Einstein condensate structures exhibits an incredible richness in
terms of holding different kinds of phases. Depending on the ratio of the inter-and intra …

Ground-State Properties and Phase Separation of Binary Mixtures in Mesoscopic Ring Lattices

V Penna, A Contestabile, A Richaud - Entropy, 2021 - mdpi.com
We investigated the spatial phase separation of the two components forming a bosonic
mixture distributed in a four-well lattice with a ring geometry. We studied the ground state of …