{
  "annotation_id": "b3bf2716-211f-4a45-909e-4ff995f9495f",
  "date_created": "2026-03-02T18:01:48.277000Z",
  "date_modified": "2026-03-02T18:01:48.277000Z",
  "file_hash": "8c5f520332efafbccc8fe99537e075372b81523a76813f79d68c9407510d8c84",
  "private": false,
  "record": {
    "abstract": "We show that the four states a|00\u003e+b|11\u003e, b^*|00\u003e-a^*|11\u003e, c|01\u003e+d|10\u003e and\nd^*|01\u003e-c^*|10\u003e cannot be discriminated with certainty if only local operations\nand classical communication (LOCC) are allowed and if only a single copy is\nprovided, except in the case when they are simply |00\u003e, |11\u003e, |01\u003e and |10\u003e (in\nwhich case they are trivially distinguishable with LOCC). We go on to show that\nthere exists a continuous range of values of a, b, c and d such that even three\nstates among the above four are not locally distinguishable, if only a single\ncopy is provided. The proof follows from the fact that logarithmic negativity\nis an upper bound of distillable entanglement.",
    "arxiv_id": "quant-ph/0111136",
    "authors": [
      "Sibasish Ghosh",
      "Guruprasad Kar",
      "Anirban Roy",
      "Debasis Sarkar",
      "Aditi Sen De",
      "Ujjwal Sen"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.65.062307",
    "title": "On local indistinguishability of orthogonal pure states by using a bound   on distillable entanglement",
    "url": "https://arxiv.org/abs/quant-ph/0111136"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6b515ded-8915-4256-926e-574d412c4ffc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}