7 papers
Quantum metric and localization in a quasicrystal
Quentin Marsal, Patric Holmvall, Annica M. Black-Schaffer
We use the quantum metric to understand the properties of quasicrystals, represented by the one-dimensional (1D) Fibonacci chain. We show that the quantum metric can relate the loc…
Observation of end-to-end pumping in a quasiperiodic Fibonacci-type photonic chain
Arnob Kumar Ghosh, Ang Chen, Ashraf El Hassan +3
Topological pumps offer a promising route to operate as connecting buses, supplying efficient and robust connectivity between non-neighboring elements in a network. Here, we invest…
Nonuniform superconducting states from Majorana flat bands
Sushanth Varada, Aksel KobiaÅka, Ankita Bhattacharya +2
Zero-energy flat bands within the superconducting gap can give rise to competing ordered phases. We investigate such phases in topological superconductors based on the magnetic ada…
Unifying description of competing chiral and nematic superconducting states in twisted bilayer graphene
Lucas Baldo, Patric Holmvall, Annica M. Black-Schaffer
We reveal a striking correspondence between electron- and phonon-driven pairing in twisted bilayer graphene (TBG) by mapping an atomistic electronically driven pairing model onto a…
Quantum state transfer and maximal entanglement between distant qubits using a minimal quasicrystal pump
Arnob Kumar Ghosh, Rubén Seoane Souto, Vahid Azimi-Mousolou +2
Coherent quantum state transfer over macroscopic distances between non-neighboring elements in quantum circuits is a crucial component to increase connectivity and simplify quantum…
Impurity strength-temperature phase diagram with phase crystals and competing time-reversal symmetry breaking states in nodal -wave superconductors
Kevin Marc Seja, Niclas Wall-Wennerdal, Tomas Löfwander +3
Phase crystals are a class of nonuniform superconducting ground states characterized by spontaneous phase gradients of the superconducting order parameter. These phase gradients no…