{
  "annotation_id": "f1117d05-30ce-496d-a6fb-0fb3dd1dfed6",
  "date_created": "2026-02-17T05:53:15.902000Z",
  "date_modified": "2026-02-17T05:53:15.902000Z",
  "file_hash": "2febe823e44593e27757881d90af332675fe62c2785af85c4447a51bed8ff0a2",
  "private": false,
  "record": {
    "abstract": "Quantum devices require coherent coupling over macroscopic distances. Recently, resonances due to Klein tunneling and Andreev reflection states (KARS) have been observed in a naturally occurring p-n junction at the interface between Bi$_2$Sr$_2$CaCu$_2$O$_{8+x}$ (BSCCO), a high-Tc superconductor (HTS), and graphene. The resonances appear as conductance oscillations with gating. Here, we show coupling between the KARS in BSCCO-graphene-BSCCO devices of varying separation (L). The coupling is evidenced by a power-law decay of resonance period as L increases from tens of nanometers to single microns. These results demonstrate the long-distance coupling of KARS cavities in graphene-HTS junctions. The length dependence seen in experiments is supported by single-particle spectral functions which show KARS are coupled by transport modes in graphene. The strong coupling between KARS in BSCCO-graphene-BSCCO junctions showcases the novelty of HTS-graphene junctions for quantum circuits and unconventional Josephson junctions.",
    "arxiv_id": "2601.08637",
    "authors": [
      "Sharadh Jois",
      "Jose L. Lado",
      "Genda Gu",
      "Qiang Li",
      "Ji Ung Lee"
    ],
    "categories": [
      "cond-mat.supr-con",
      "cond-mat.mes-hall"
    ],
    "doi": "10.1103/m56s-hcdq",
    "journal_ref": "Phys. Rev. B 113, 035410 (2026)",
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "title": "Coupling of Klein-Andreev Resonant States in Bi$_2$Sr$_2$CaCu$_2$O$_{8+x}$-graphene-Bi$_2$Sr$_2$CaCu$_2$O$_{8+x}$ Devices",
    "url": "https://arxiv.org/abs/2601.08637",
    "version": "v1"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "383c1e32-3387-43d3-8c75-5c4953923faa",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}