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Flat-band induced local Hilbert space fragmentation
Eloi Nicolau, Anselmo M. Marques, Ricardo G. Dias +1
We demonstrate that a complete class of flat-band lattices with underlying commutative local symmetries exhibit a locally fragmented Hilbert space. The equitable partition theorem…
Bosonic orbital Su-Schrieffer-Heeger model in a lattice of rings
Eloi Nicolau, Anselmo M. Marques, Jordi Mompart +2
We study the topological properties of interacting and non-interacting bosons loaded in the orbital angular momentum states in a lattice of rings with alternating distances.…
Quantum-jump analysis of frequency up-conversion amplification without inversion in a four-level scheme
Juan Luis Rubio, Jordi Mompart, Verònica Ahufinger
In this work, we use the quantum-jump approach to study light-matter interactions in a four-level scheme giving rise to frequency up-conversion amplification without inversion (AWI…