{
  "annotation_id": "bde63043-700b-4abf-a2e8-c08473bbe434",
  "date_created": "2026-03-02T18:01:42.005000Z",
  "date_modified": "2026-03-02T18:01:42.005000Z",
  "file_hash": "6b754f9d1f889c8547fb74aa55023c575034d3b8c0b2f3073042f8bfb975d0ba",
  "private": false,
  "record": {
    "abstract": "We propose an optical double-cavity resonator whose response to a signal is\nsimilar to that of an Electromagnetically Induced Transparency (EIT) medium. A\ncombination of such a device with a four-level EIT medium can serve for\nachieving large cross-Kerr modulation of a probe field by a signal field. This\nwould offer the possibility of building a quantum logic gate based on photonic\nqubits. We discuss the technical requirements that are necessary for realizing\na probe-photon phase shift of Pi caused by a single-photon signal. The main\ndifficulty is the requirement of an ultra-low reflectivity beamsplitter and to\noperate a sufficiently dense cool EIT medium in a cavity.",
    "arxiv_id": "quant-ph/0012073",
    "authors": [
      "T. Opatrny",
      "D. -G. Welsch"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.64.023805",
    "title": "Coupled cavities for enhancing the cross-phase modulation in   electromagnetically induced transparency",
    "url": "https://arxiv.org/abs/quant-ph/0012073"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9d161c8a-8242-49c8-b25b-5a445d87f74e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}