{
  "annotation_id": "11cdf40c-bb2f-4345-89ab-46b80c8bba22",
  "date_created": "2026-03-02T18:02:07.099000Z",
  "date_modified": "2026-03-02T18:02:07.099000Z",
  "file_hash": "6e29c58fdf26a54c0877a7e94a5c191288ca3234e16e16e906d9a5da0d2989b5",
  "private": false,
  "record": {
    "abstract": "We propose a scheme to implement variable coupling between two flux qubits\nusing the screening current response of a dc Superconducting QUantum\nInterference Device (SQUID). The coupling strength is adjusted by the current\nbias applied to the SQUID and can be varied continuously from positive to\nnegative values, allowing cancellation of the direct mutual inductance between\nthe qubits. We show that this variable coupling scheme permits efficient\nrealization of universal quantum logic. The same SQUID can be used to determine\nthe flux states of the qubits.",
    "arxiv_id": "quant-ph/0406049",
    "authors": [
      "B. L. T. Plourde",
      "J. Zhang",
      "K. B. Whaley",
      "F. K. Wilhelm",
      "T. L. Robertson",
      "T. Hime",
      "S. Linzen",
      "P. A. Reichardt",
      "C. -E. Wu",
      "John Clarke"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevB.70.140501",
    "title": "Entangling flux qubits with a bipolar dynamic inductance",
    "url": "https://arxiv.org/abs/quant-ph/0406049"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4ed11c4a-d782-454a-b746-5401eb07f904",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}