{
  "annotation_id": "8b2b377e-43dc-4a2f-93d1-93c73f73a5a2",
  "date_created": "2026-03-02T18:02:03.483000Z",
  "date_modified": "2026-03-02T18:02:03.483000Z",
  "file_hash": "5ce27308484216961756ceb259933563f0902a196ad5a7b330c4b8764d270a4f",
  "private": false,
  "record": {
    "abstract": "In this paper we describe a set of circuits that can measure the concurrence\nof a two qubit density matrix without requiring the deliberate addition of\nnoise. We then extend these methods to obtain a circuit to measure one type of\nthree qubit entanglement for pure states, namely the 3-tangle.",
    "arxiv_id": "quant-ph/0309212",
    "authors": [
      "Hilary A. Carteret"
    ],
    "categories": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Exact interferometers for the concurrence and residual 3-tangle",
    "url": "https://arxiv.org/abs/quant-ph/0309212"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8f78c2cb-2f64-473a-b821-ec8387f409aa",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}