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Open Quantum Systems Decoherence Superconducting Qubits

Robustness of flat band superconductivity against disorder in a two-dimensional Lieb lattice model

arXiv
Authors: Georges Bouzerar, Maxime Thumin

Year

2025

Paper ID

16016

Status

Preprint

Abstract Read

~2 min

Abstract Words

106

Citations

N/A

Abstract

Recently, the possibility of high-temperature superconductivity (SC) in flat-band (FB) systems has been the focus of a great deal of activity. This study reveals that unlike conventional intra-band SC for which disorder has a dramatic impact, that associated with FBs is surprisingly robust to disorder-induced fluctuations and quasi-particle localization. In particular, for weak off-diagonal disorder, the critical temperature decreases linearly with disorder amplitude for conventional SC, whereas it is only quadratic in the case of SC in FBs. Our findings could have a major impact on the research and development of new compounds whose high purity will no longer be a critical barrier to their synthesis.

Why This Paper Matters

  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
  • It adds a 2025 reference point for readers tracking recent quantum research.
  • Recently, the possibility of high-temperature superconductivity (SC) in flat-band (FB) systems has been the focus of a great deal of activity.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2512.07648 [2] arXiv https://arxiv.org/abs/2512.07648 [3] Publisher https://arxiv.org/abs/2512.07648

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