Two-level systems in superconducting quantum devices due to trapped quasiparticles

SE De Graaf, L Faoro, LB Ioffe, S Mahashabde… - Science …, 2020 - science.org
A major issue for the implementation of large-scale superconducting quantum circuits is the
interaction with interfacial two-level system (TLS) defects that lead to qubit parameter …

Deposition and pharmacokinetics of flunisolide delivered from pressurized inhalers containing non-CFC and CFC propellants

…, P Hirst, G Pitcairn, S Mahashabde… - Journal of aerosol …, 2001 - liebertpub.com
Our objective was to assess the deposition and pharmacokinetics of a novel formulation of
flunisolide (Aerobid®, Forest Laboratories) in hydrofluoroalkane (HFA) 134a delivered by …

Fast Tunable High--Factor Superconducting Microwave Resonators

S Mahashabde, E Otto, D Montemurro, S de Graaf… - Physical Review …, 2020 - APS
We present fast tunable superconducting microwave resonators fabricated from planar Nb N
on a sapphire substrate. The 3 λ/4 wavelength resonators are tuning fork shaped and tuned …

Express optical analysis of epitaxial graphene on SiC: impact of morphology on quantum transport

T Yager, A Lartsev, S Mahashabde, S Charpentier… - Nano …, 2013 - ACS Publications
We show that inspection with an optical microscope allows surprisingly simple and accurate
identification of single and multilayer graphene domains in epitaxial graphene on silicon …

A frequency selective surface based focal plane receiver for the OLIMPO balloon-borne telescope

S Mahashabde, A Sobolev, A Bengtsson… - IEEE Transactions …, 2014 - ieeexplore.ieee.org
We describe here a focal plane array of Cold-Electron Bolometer (CEB) detectors integrated
in a frequency selective surface (FSS) for the 350 GHz detection band of the OLIMPO …

Optical response of a cold-electron bolometer array integrated in a 345-GHz cross-slot antenna

…, VS Edelman, S Mahashabde… - IEEE transactions on …, 2011 - ieeexplore.ieee.org
Two series/parallel arrays of ten cold-electron bolometers with superconductor-insulator-
normal tunnel junctions were integrated in orthogonal ports of a cross-slot antenna. To …

Reflection-enhanced gain in traveling-wave parametric amplifiers

…, G Oelsner, R Stolz, A Danilov, S Mahashabde… - Physical Review B, 2023 - APS
The operating principle of traveling-wave parametric amplifiers is typically understood in
terms of the standard coupled mode theory, which describes the evolution of forward …

Quantifying dynamics and interactions of individual spurious low-energy fluctuators in superconducting circuits

SE De Graaf, S Mahashabde, SE Kubatkin… - Physical Review B, 2021 - APS
Understanding the nature and dynamics of material defects in superconducting circuits is of
paramount importance for improving qubit coherence and parameter stability and much …

Planar frequency selective bolometric array at 350 GHz

S Mahashabde, AS Sobolev… - IEEE Transactions …, 2014 - ieeexplore.ieee.org
In this paper, we describe a bolometric focal plane array consisting of the cold electron
bolometer (CEB) integrated in a frequency selective surface (FSS) fabricated on a silicon …

Sensitivity to cosmic rays of cold electron bolometers for space applications

…, P de Bernardis, LS Kuzmin, S Mahashabde… - Journal of Low …, 2014 - Springer
An important phenomenon limiting the sensitivity of bolometric detectors for future space
missions is the interaction with cosmic rays. We tested the sensitivity of Cold Electron …