{
  "annotation_id": "baad0487-a705-4606-920a-81206d611b07",
  "date_created": "2026-03-02T18:01:42.546000Z",
  "date_modified": "2026-03-02T18:01:42.546000Z",
  "file_hash": "1c0f65dcb4b600ffb263fb2891f1601de86fe6c3ae59b7a7fb8809d598b7c971",
  "private": false,
  "record": {
    "abstract": "A pulsed balanced homodyne detector has been developed for precise\nmeasurements of electric field quadratures of pulsed optical quantum states. A\nhigh level of common mode suppression (\u003e 85 dB) and low electronic noise (730\nelectrons per pulse) provide a signal to noise ratio of 14 dB for the\nmeasurement of the quantum noise of individual pulses. Measurements at\nrepetition rates up to 1 MHz are possible. As a test, quantum tomography of the\ncoherent state is performed and the Wigner function and the density matrix are\nreconstructed with a 99.5% fidelity. The detection system can also be used for\nultrasensitive balanced detection in cw mode, e.g. for weak absorption\nmeasurements.",
    "arxiv_id": "quant-ph/0104084",
    "authors": [
      "H. Hansen",
      "T. Aichele",
      "C. Hettich",
      "P. Lodahl",
      "A. I. Lvovsky",
      "J. Mlynek",
      "S. Schiller"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1364/OL.26.001714",
    "journal_ref": "Optics Letters 26, 1430 (2001)",
    "title": "An ultra-sensitive pulsed balanced homodyne detector: Application to   time-domain quantum measurements",
    "url": "https://arxiv.org/abs/quant-ph/0104084"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "123c3431-2aa2-48ac-8cb9-b6b57eeb9c9f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}