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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…
A Large- Approach to Magnetic Impurities in Superconductors
Chen-How Huang, Alejandro M. Lobos, Miguel A. Cazalilla
Quantum spin impurities coupled to superconductors are under intense investigation for their relevance to fundamental research as well as the prospects to engineer novel quantum ph…
Probing Magnetic and Triplet Correlations in Spin-Split Superconductors with Magnetic Impurities
Chen-How Huang, Anastasiia Skurativska, F. Sebastian Bergeret +1
A superconductor (SC) in proximity to a ferromagnetic insulator (FMI) is predicted to exhibit mixed singlet and triplet pair correlations. The magnetic proximity effect of FMI spin…