30 citations · 119 across the 10 of their papers we have counts for
10 papers
Robustness of quantized Hall resistivity under cavity coupling at zero temperature
Juan Román-Roche, Jie Wang, Michael Ruggenthaler +2
Recent experiments have shown that strong light-matter coupling in electromagnetic cavities can modify transport properties of quantum Hall systems through the formation of Landau…
Mumax3-cQED: an extension of Mumax3 to simulate magnon-photon interactions in cavity QED
Sergio Martínez-Losa del Rincón, Juan Román-Roche, Andrés Martín-Megino +2
We present an extension of the well-known micromagnetic package Mumax3 to simulate magnon-polaritons in realistic magnetic materials and nanostructures. Mumax3-cQED leverages the f…
First- and second-order quantum phase transitions in the long-range unfrustrated antiferromagnetic Ising chain
Víctor Herráiz-López, Sebastián Roca-Jerat, Manuel Gallego +4
We study the ground-state phase diagram of an unfrustrated antiferromagnetic Ising chain with longitudinal and transverse fields in the full range of interactions: from all-to-all…
Linear response theory for cavity QED materials at arbitrary light-matter coupling strengths
Juan Román-Roche, Álvaro Gómez-León, Fernando Luis +1
We develop a linear response theory for materials collectively coupled to a cavity that is valid in all regimes of light-matter coupling, including symmetry-broken phases. We prese…
Bound polariton states in the Dicke-Ising model
Juan Román-Roche, Álvaro Gómez-León, Fernando Luis +1
We present a study of hybrid light-matter excitations in cavity QED materials using the Dicke-Ising model as a theoretical framework. Leveraging linear response theory, we derive t…
Exact solution for quantum strong long-range models via a generalized Hubbard-Stratonovich transformation
Juan Román-Roche, Víctor Herráiz-López, David Zueco
We present an exact analytical solution for quantum strong long-range models in the canonical ensemble by extending the classical solution proposed in [Campa et al., J. Phys. A 36,…
Circuit Complexity through phase transitions: consequences in quantum state preparation
Sebastián Roca-Jerat, Teresa Sancho-Lorente, Juan Román-Roche +1
In this paper, we analyze the circuit complexity for preparing ground states of quantum many-body systems. In particular, how this complexity grows as the ground state approaches a…
Effective theory for matter in non-perturbative cavity QED
Juan Román-Roche, David Zueco
Starting from a general material system of particles coupled to a cavity, we use a coherent-state path integral formulation to produce a non-perturbative effective theory for t…
Quantum kernels to learn the phases of quantum matter
Teresa Sancho-Lorente, Juan Román-Roche, David Zueco
Classical machine learning has succeeded in the prediction of both classical and quantum phases of matter. Notably, kernel methods stand out for their ability to provide interpreta…
Distant emitters in ultrastrong waveguide QED: Ground-state properties and non-Markovian dynamics
Carlos A. González-Gutiérrez, Juan Román-Roche, David Zueco
Starting from the paradigmatic spin-boson model (SBM), we investigate the static and dynamical properties of a system of two distant two-level emitters coupled to a one-dimensional…