Correlating decoherence in transmon qubits: Low frequency noise by single fluctuators
We report on long-term measurements of a highly coherent, nontunable superconducting
transmon qubit, revealing low-frequency burst noise in coherence times and qubit transition …
transmon qubit, revealing low-frequency burst noise in coherence times and qubit transition …
Direct evidence for Cooper pairing without a spectral gap in a disordered superconductor above Tc
The idea that preformed Cooper pairs could exist in a superconductor at temperatures
higher than its zero-resistance critical temperature (T c) has been explored for …
higher than its zero-resistance critical temperature (T c) has been explored for …
Vacancy dynamics in niobium and its native oxides and their potential implications for quantum computing and superconducting accelerators
M Wenskat, J Čižek, MO Liedke, M Butterling, M Stiehl… - Physical Review B, 2022 - APS
In recent years, superconducting radio-frequency (SRF) cavities have been considered as
candidates for qubits in quantum computing, showing longer photon lifetimes and, therefore …
candidates for qubits in quantum computing, showing longer photon lifetimes and, therefore …
Single-Gap Superconductivity and Dome of Superfluid Density in Nb-Doped
M Thiemann, MH Beutel, M Dressel, NR Lee-Hone… - Physical Review Letters, 2018 - APS
SrTiO 3 exhibits a superconducting dome upon doping with Nb, with a maximum critical
temperature T c≈ 0.4 K. Using microwave stripline resonators at frequencies from 2 to 23 …
temperature T c≈ 0.4 K. Using microwave stripline resonators at frequencies from 2 to 23 …
Superfluid flow in disordered superconductors with Dynes pair-breaking scattering: Depairing current, kinetic inductance, and superheating field
T Kubo - Physical Review Research, 2020 - APS
We investigate the effects of Dynes pair-breaking scattering rate Γ on the superfluid flow in a
narrow thin-film superconductor and a semi-infinite superconductor by self-consistently …
narrow thin-film superconductor and a semi-infinite superconductor by self-consistently …
Effects of nonmagnetic impurities and subgap states on the kinetic inductance, complex conductivity, quality factor, and depairing current density
T Kubo - Physical Review Applied, 2022 - APS
We investigate how a combination of a nonmagnetic impurity scattering rate γ and finite
subgap states parametrized by Dynes Γ affects various physical quantities relevant to …
subgap states parametrized by Dynes Γ affects various physical quantities relevant to …
Artificial superconducting Kondo lattice in a van der Waals heterostructure
Engineering Kondo lattice with tailored functionality is desirable for elucidating the heavy
fermion physics. We realize the construction of an artificial Kondo lattice/superconductor …
fermion physics. We realize the construction of an artificial Kondo lattice/superconductor …
Tunneling spectroscopy of few-monolayer in high magnetic fields: Triplet superconductivity and Ising protection
In conventional Bardeen-Cooper-Schrieffer superconductors, Cooper pairs of electrons of
opposite spin (ie, singlet structure) form the ground state. Equal-spin triplet pairs (ESTPs), as …
opposite spin (ie, singlet structure) form the ground state. Equal-spin triplet pairs (ESTPs), as …
Conductance matrix symmetries of multiterminal semiconductor-superconductor devices
Nonlocal tunneling spectroscopy of multiterminal semiconductor-superconductor hybrid
devices is a powerful tool to investigate the Andreev bound states below the parent …
devices is a powerful tool to investigate the Andreev bound states below the parent …
Compact vacuum-gap transmon qubits: Selective and sensitive probes for superconductor surface losses
State-of-the-art transmon qubits rely on large capacitors, which systematically improve their
coherence due to reduced surface-loss participation. However, this approach increases both …
coherence due to reduced surface-loss participation. However, this approach increases both …