Impact of ionizing radiation on superconducting qubit coherence

@article{Vepsalainen2020ImpactOI,
  title={Impact of ionizing radiation on superconducting qubit coherence},
  author={A. Vepsalainen and Amir H. Karamlou and J. Orrell and Akshunna S. Dogra and B. Loer and F. Vasconcelos and David K. Kim and A. Melville and B. Niedzielski and J. Yoder and S. Gustavsson and J. Formaggio and B. VanDevender and W. Oliver},
  journal={Nature},
  year={2020},
  volume={584},
  pages={551 - 556}
}
Technologies that rely on quantum bits (qubits) require long coherence times and high-fidelity operations1. Superconducting qubits are one of the leading platforms for achieving these objectives2,3. However, the coherence of superconducting qubits is affected by the breaking of Cooper pairs of electrons4–6. The experimentally observed density of the broken Cooper pairs, referred to as quasiparticles, is orders of magnitude higher than the value predicted at equilibrium by the Bardeen–Cooper… Expand
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References

SHOWING 1-10 OF 68 REFERENCES
Reducing the impact of radioactivity on quantum circuits in a deep-underground facility
TLDR
Operating in a deep-underground lead-shielded cryostat decreases the quasiparticle burst rate by a factor thirty and reduces dissipation up to a factor four, showcasing the importance of radiation abatement in future solid-state quantum hardware. Expand
A Quantum Engineer's Guide to Superconducting Qubits
The aim of this review is to provide quantum engineers with an introductory guide to the central concepts and challenges in the rapidly accelerating field of superconducting quantum circuits. OverExpand
Direct Dispersive Monitoring of Charge Parity in Offset-Charge-Sensitive Transmons
A striking characteristic of superconducting circuits is that their eigenspectra and intermode coupling strengths are well predicted by simple Hamiltonians representing combinations of quantumExpand
Error mitigation extends the computational reach of a noisy quantum processor
TLDR
This work applies the error mitigation protocol to mitigate errors in canonical single- and two-qubit experiments and extends its application to the variational optimization of Hamiltonians for quantum chemistry and magnetism. Expand
Quantum supremacy using a programmable superconducting processor
TLDR
Quantum supremacy is demonstrated using a programmable superconducting processor known as Sycamore, taking approximately 200 seconds to sample one instance of a quantum circuit a million times, which would take a state-of-the-art supercomputer around ten thousand years to compute. Expand
Superconducting Qubits: Current State of Play
TLDR
Several of the recent experimental advances in qubit hardware, gate implementations, readout capabilities, early NISQ algorithm implementations, and quantum error correction using superconducting qubits are discussed. Expand
A Search for Lepton Number Violation via 0νββ Decay of 130Te
  • Phys. Rev. Lett. 120, 132501, DOI: 10.1103/PhysRevLett. 120.132501
  • 2018
APS : Review of Particle Physics, 2018
The complete Review(both volumes) is published online on the website of the Particle Data Group(http://pdg.lbl.gov) and in a journal. Volume 1 is available in print as thePDG Book. AParticle PhysicsExpand
Extending the computational reach of a noisy superconducting quantum processor
Quantum computation, a completely different paradigm of computing, benefits from theoretically proven speed-ups for certain problems and opens up the possibility of exactly studying the properties ofExpand
First Results from CUORE: A Search for Lepton Number Violation via 0νββ Decay of ^{130}Te.
TLDR
The CUORE experiment, a ton-scale cryogenic bolometer array, recently began operation at the Laboratori Nazionali del Gran Sasso in Italy, and it is applied for the first time to a high-sensitivity search for a lepton-number-violating process: ^{130}Te neutrinoless double-beta decay. Expand
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3
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5
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