5 papers
Superconductor-"Metal" Transition of One-dimensional Interacting Bosons with Ohmic Quantum Dissipation
Miguel A. Cazalilla
The phase diagram of a system of interacting bosons (Cooper pairs) hoping on a one-dimensional (1D) lattice with onsite phase dissipation describing the Josephson tunneling to a ne…
Ground States and Excitations of Magnetic Impurities in Pseudogap Superconducting Systems
Miguel A. Cazalilla, Chen-How Huang
Combining effective field theory and numerical renormalization-group (NRG), we study the ground-state phase diagram and single-particle excitations of a spin- impurit…
Mapping the Stability of Spin Qubits in Superconducting Pseudogap Systems
Chen-How Huang, Miguel A. Cazalilla
Superconducting spin qubits, realized as Yu-Shiba-Rusinov spin-doublet states in quantum-dot-superconductor systems, represent a cornerstone of current research in quantum technolo…
Superconducting Spin-Singlet QuBit in a Triangulene Spin Chain
Chen-How Huang, Jon Ortuzar, M. A. Cazalilla
Chains of triangular nanographene (triangulene), recently identified as realizing the valence-bond solid phase of a spin-1 chain, offer a promising platform for quantum information…
Phase-induced switching of ferromagnetic insulators in Josephson spin valves
A. A. Mazanik, C. -H. Huang, Miguel A. Cazalilla +1
We study the Josephson effect in junctions composed of two ferromagnetic insulator/diffusive superconductor bilayers separated by an insulating barrier. By computing the free energ…