{
  "annotation_id": "5cabc57a-c0e0-43e5-902f-fbe2c8d89b06",
  "date_created": "2026-03-02T18:01:59.858000Z",
  "date_modified": "2026-03-02T18:01:59.858000Z",
  "file_hash": "977ea30d9658128e1438d6529c8d76de3e8e64850c9c0ae7ef94d6712a8ff39c",
  "private": false,
  "record": {
    "abstract": "We show that both information erasure process and trace process can be\nrealized by projective measurement. And a partial trace operation consists to a\nprojective measurement on a subsystem. We show that a nonunitary operation will\ndestroy the wave-behavior of a particle. We give a quantum manifestation of\nMaxwell\u0027s demon and give a quantum manifestation of the second law of\ntherodynamics. We show that, considering the law of memontum-energy\nconversation, the evolution of a closed system should be unitary and the von\nNeumann entropy of the closed quantum system should be least.",
    "arxiv_id": "quant-ph/0307026",
    "authors": [
      "Qing-Yu Cai"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Measurement, Trace, Information Erasure and Entropy",
    "url": "https://arxiv.org/abs/quant-ph/0307026"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "dccc75dd-43a6-4bc8-856b-f887880b9522",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}