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Bethany Niedzielski

Researcher at Massachusetts Institute of Technology

Publications -  56
Citations -  1321

Bethany Niedzielski is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Qubit & Josephson effect. The author has an hindex of 14, co-authored 41 publications receiving 668 citations. Previous affiliations of Bethany Niedzielski include Michigan State University.

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Controllable 0–π Josephson junctions containing a ferromagnetic spin valve

TL;DR: The phase state of a Josephson junction containing two ferromagnetic layers can be toggled between 0 and π by changing the relative orientation of the two magnetizations as mentioned in this paper. But the phase state is invariant to the thickness of the material.
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Impact of ionizing radiation on superconducting qubit coherence.

TL;DR: In this paper, the effect of ionizing radiation from environmental radioactive materials and cosmic rays contributes to the observed difference in the density of the broken Cooper pairs, referred to as quasiparticles, which is orders of magnitude higher than the value predicted at equilibrium by the Bardeen-Cooper-Schrieffer theory.
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Waveguide Quantum Electrodynamics with Giant Superconducting Artificial Atoms

TL;DR: In this paper, the authors realized a giant atom by coupling small atoms to a waveguide at multiple, but well separated, discrete locations, enabling tunable atom-waveguide couplings with large on-off ratios and a coupling spectrum that can be engineered by device design.
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Realization of high-fidelity CZ and ZZ-free iSWAP gates with a tunable coupler

TL;DR: In this paper, a systematic approach that goes beyond the dispersive approximation to exploit the engineered level structure of the coupler and optimize its control is presented, and the authors demonstrate CZ and $ZZ$-free iSWAP gates with two-qubit interaction fidelities of 99.76 \pm 0.07$% and 99.87 \ pm 0.23$%, respectively.
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Spin-valve Josephson junctions for cryogenic memory

TL;DR: In this article, a phase-controllable spin-valve Josephson junction with a fixed thickness of 2.0 nm and a NiFe layer of thickness varying between 1.1 and 1.8 nm was studied.