6 papers
Unified topological phase diagram of quantum Hall and superconducting vortex-lattice states
Daniil S. Antonenko, Liang Fu, Leonid I. Glazman
We present the global topological phase diagram of a two-dimensional electron gas placed in a quantizing magnetic field and proximitized by a superconducting vortex lattice. Our th…
Recovery dynamics of a gap-engineered transmon after a quasiparticle burst
Heekun Nho, Thomas Connolly, Pavel D. Kurilovich +4
Ionizing radiation impacts create bursts of quasiparticle density in superconducting qubits. These bursts temporarily degrade qubit coherence which can be detrimental for quantum e…
Nonlocal conductance of a Majorana wire near the topological transition
Vladislav D. Kurilovich, William S. Cole, Roman M. Lutchyn +1
We develop a theory of the nonlocal conductance for a disordered Majorana wire tuned near the topological transition critical point. Under these conditions, the antisym…
Making s-wave superconductors topological with magnetic field
Daniil S. Antonenko, Liang Fu, Leonid. I Glazman
We show that a two-dimensional -wave superconductor may become topological in the presence of a magnetic field that leads to the formation of an Abrikosov vortex lattice. Below…
Effect of quasiparticles on the parameters of a gap-engineered transmon
Daniil S. Antonenko, Pavel D. Kurilovich, Francisco J. Matute-Cañadas +1
We evaluate the quasiparticle contribution to the frequency shift and relaxation rates of a transmon with the Josephson junctions connecting superconductors that have unequal energ…
High-frequency readout free from transmon multi-excitation resonances
Pavel D. Kurilovich, Thomas Connolly, Charlotte G. L. Bøttcher +12
Quantum computation will rely on quantum error correction to counteract decoherence. Successfully implementing an error correction protocol requires the fidelity of qubit operation…