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PreprintCC BY 4.0arXiv

Transient triplet blockade in Andreev junction

  • R. Taranko
  • J. Baranski
  • A. Jankiewicz
  • K. Wrzesniewski
  • I. Weymann
  • T. Domanski
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Abstract

We study the time-dependent triplet configuration, appearing under nonequilibrium conditions in a nanoscopic junction with two quantum dots coupled in series between superconductor and normal metallic lead. We show that in the situation, when both quantum dots are singly occupied by identical spin electrons, the on-dot electron pairing is suppressed what substantially affects the subgap charge transport. We investigate processes in which such configuration can be temporarily encountered, either due to the initial conditions or by imposing the external magnetic field. Our analytical and numerical calculations provide estimations for the temporal scales, characterizing evolution of the triplet configuration which could be manifested in the time-resolved tunneling measurements. Such nonequilibrium features of the triplet configuration might be relevant to operations on superconducting qubits, in their conventional and/or topological realizations.

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Cite

BibTeXRIS
BibTeX
@misc{taranko2026transient,
  title = {{Transient triplet blockade in Andreev junction}},
  author = {R. Taranko and J. Baranski and A. Jankiewicz and K. Wrzesniewski and I. Weymann and T. Domanski},
  howpublished = {arXiv},
  year = {2026},
  month = jun,
  doi = {10.48550/arxiv.2606.20170},
  eprint = {2606.20170},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.20170},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Transient triplet blockade in Andreev junction
AU  - R. Taranko
AU  - J. Baranski
AU  - A. Jankiewicz
AU  - K. Wrzesniewski
AU  - I. Weymann
AU  - T. Domanski
PY  - 2026
DA  - 2026/06/18
PB  - arXiv
DO  - 10.48550/arxiv.2606.20170
UR  - https://arxiv.org/abs/2606.20170
AB  - We study the time-dependent triplet configuration, appearing under nonequilibrium conditions in a nanoscopic junction with two quantum dots coupled in series between superconductor and normal metallic lead. We show that in the situation, when both quantum dots are singly occupied by identical spin electrons, the on-dot electron pairing is suppressed what substantially affects the subgap charge transport. We investigate processes in which such configuration can be temporarily encountered, either due to the initial conditions or by imposing the external magnetic field. Our analytical and numerical calculations provide estimations for the temporal scales, characterizing evolution of the triplet configuration which could be manifested in the time-resolved tunneling measurements. Such nonequilibrium features of the triplet configuration might be relevant to operations on superconducting qubits, in their conventional and/or topological realizations.
ER  -