{
  "annotation_id": "2188fba9-e813-4a07-9323-9f2cbab2ed86",
  "date_created": "2026-03-02T18:02:13.269000Z",
  "date_modified": "2026-03-02T18:02:13.269000Z",
  "file_hash": "73ac027735b42d615040dddb7c19d1731d0e386739c0932b78761b8bbf8b45de",
  "private": false,
  "record": {
    "abstract": "Using an NMR quantum computer, we experimentally simulate the quantum phase\ntransition of a Heisenberg spin chain. The Hamiltonian is generated by a\nmultiple pulse sequence, the nuclear spin system is prepared in its\n(pseudo-pure) ground state and the effective Hamiltonian varied in such a way\nthat the Heisenberg chain is taken from a product state to an entangled state\nand finally to a different product state.",
    "arxiv_id": "quant-ph/0411049",
    "authors": [
      "Xinhua Peng",
      "Jiangfeng Du",
      "Dieter Suter"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.71.012307",
    "title": "Quantum Phase Transition of Ground-state Entanglement in a Heisenberg   Spin Chain Simulated in an NMR Quantum Computer",
    "url": "https://arxiv.org/abs/quant-ph/0411049"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b54e6ff9-1179-4dfb-bfca-34a03f93f769",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}