{
  "annotation_id": "19fc3818-aa72-44e1-9536-d4eb599b2435",
  "date_created": "2026-03-02T18:02:17.048000Z",
  "date_modified": "2026-03-02T18:02:17.048000Z",
  "file_hash": "d1696dcb4e849fe0f3a26d0694ce66a53e425e3268ea8b6724b970fbec9c7108",
  "private": false,
  "record": {
    "abstract": "Using only linear interactions and a local parity measurement we show how\nentanglement can be detected between two harmonic oscillators. The scheme\ngeneralizes to measure both linear and non-linear functionals of an arbitrary\noscillator state. This leads to many applications including purity tests,\neigenvalue estimation, entropy and distance measures - all without the need for\nnon-linear interactions or complete state reconstruction. Remarkably,\nexperimental realization of the proposed scheme is already within the reach of\ncurrent technology with linear optics.",
    "arxiv_id": "quant-ph/0507076",
    "authors": [
      "K. L. Pregnell"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.96.060501",
    "title": "Measuring non-linear functionals of quantum harmonic oscillator states",
    "url": "https://arxiv.org/abs/quant-ph/0507076"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8ae4f79e-83f3-4626-9688-ccd2937ddf95",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}