111 citations · 386 across the 16 of their papers we have counts for
16 papers
Exploring Quantum Annealing Architectures: A Spin Glass Perspective
Gabriel Jaumà, Juan José García-Ripoll, Manuel Pino
We study the spin-glass transition in several Ising models of relevance for quantum annealers. We extract the spin-glass critical temperature by extrapolating the pseudo-critical p…
Bound states in the continuum in a fluxonium qutrit
María Hita-Pérez, Pedro Orellana, Juan José García-Ripoll +1
The heavy fluxonium at zero external flux has a long-lived state when coupled capacitively to any other system. We analyze it by projecting all the fluxonium relevant operators int…
Three-Josephson Junctions Flux Qubit Couplings
María Hita-Pérez, Gabriel Jaumà, Manuel Pino +1
We analyze the coupling of two flux qubits with a general many-body projector into the low-energy subspace. Specifically, we extract the effective Hamiltonians that controls the dy…
Ultrastrong capacitive coupling of flux qubits
María Hita-Pérez, Gabriel Jaumà, Manuel Pino +1
A flux qubit can interact strongly when it is capacitively coupled to other circuit elements. This interaction can be separated in two parts, one acting on the qubit subspaces and…
Scaling up the Anderson transition in random-regular graphs
M. Pino
We study the Anderson transition in lattices with the connectivity of a random-regular graph. Our results indicate that fractal dimensions are continuous across the transition, but…
Mediator assisted cooling in quantum annealing
M. Pino, Juan José García-Ripoll
We show a significant reduction of errors for an architecture of quantum annealers (QA) where bosonic modes mediate the interaction between qubits. These systems have a large redun…
From ergodic to non-ergodic chaos in Rosenzweig-Porter model
M. Pino, J. Tabanera, P. Serna
The Rosenzweig-Porter model is a one-parameter family of random matrices with three different phases: ergodic, extended non-ergodic and localized. We characterize numerically each…
Quantum annealing in spin-boson model: from a perturbative to a ultrastrong mediated coupling
Manuel Pino, Juan José García-Ripoll
We study a quantum annealer where bosons mediate the Ising-type interactions between qubits. We compare the efficiency of ground state preparation for direct and mediated couplings…
Multifractal metal in a disordered Josephson Junction Array
M. Pino, V. E. Kravtsov, B. L. Altshuler +1
We report the results of the numerical study of the non-dissipative quantum Josephson junction chain with the focus on the statistics of many-body wave functions and local energy s…
Majorana boundary modes in Josephson junctions arrays with gapless bulk excitations
M. Pino, A. M. Tsvelik, L. B. Ioffe
The search for Majorana bound states in solid-state physics has been limited to materials which display a gap in their bulk spectrum. We show that such unpaired states appear in ce…
Green functions of interacting systems in the strongly localized regime
A. N. Somoza, M. Ortuño, V. Gasparian +1
We have developed an approach to calculate the single-particle Green function of a one-dimensional many-body system in the strongly localized limit at zero temperature. Our approac…
Non-ergodic metallic and insulating phases of Josephson junction chains
M. Pino, B. L. Altshuler, L. B. Ioffe
Strictly speaking the laws of the conventional Statistical Physics, based on the Equipartition Postulate and Ergodicity Hypothesis, apply only in the presence of a heat bath. Until…
Entanglement growth in many-body localized systems with long-range interactions
M. Pino
We study the time evolution of one-dimensional systems of fermions with long-range interactions in the presence of strong disorder. Exact diagonalization of small systems supports…
Capturing the re-entrant behaviour of one-dimensional Bose-Hubbard model
M. Pino, J. Prior, S. R. Clark
The Bose Hubbard model (BHM) is an archetypal quantum lattice system exhibiting a quantum phase transition between its superfluid (SF) and Mott-insulator (MI) phase. Unlike in high…
Re-entrance and entanglement in the one-dimensional Bose-Hubbard model
M. Pino, J. Prior, A. M. Somoza +2
Re-entrance is a novel feature where the phase boundaries of a system exhibit a succession of transitions between two phases A and B, like A-B-A-B, when just one parameter is varie…
Quantum Coulomb gap in low dimensions
M. Pino, A. M. Somoza, M. Ortuño
We study the single-particle density of states of one-dimensional and two-dimensional quantum disordered systems with long-range interactions. We consider a interactio…