{
  "annotation_id": "e8d3b0bf-2aa8-4b7f-943f-fc3b2fefbc94",
  "date_created": "2026-03-02T18:02:34.114000Z",
  "date_modified": "2026-03-02T18:02:34.114000Z",
  "file_hash": "e9e14a8e46cf8fbe025ad1f1ea3b9e486742b40515ca35e78b378b27371f4c5d",
  "private": false,
  "record": {
    "abstract": "We show that negative refraction with minimal absorption can be obtained by\nmeans of quantum interference effects similar to electromagnetically induced\ntransparency. Coupling a magnetic dipole transition coherently with an electric\ndipole transition leads to electromagnetically induced chirality, which can\nprovide negative refraction without requiring negative permeability, and also\nsuppresses absorption. This technique allows negative refraction in the optical\nregime at densities where the magnetic susceptibility is still small and with\nrefraction/absorption ratios that are orders of magnitude larger than those\nachievable previously. Furthermore, the value of the refractive index can be\nfine-tuned via external laser fields, which is essential for practical\nrealization of sub-diffraction-limit imaging.",
    "arxiv_id": "quant-ph/0702234",
    "authors": [
      "J\u00fcrgen K\u00e4stel",
      "Michael Fleischhauer",
      "Susanne F. Yelin",
      "Ronald L. Walsworth"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.99.073602",
    "title": "Tunable negative refraction without absorption via electromagnetically   induced chirality",
    "url": "https://arxiv.org/abs/quant-ph/0702234"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "25f52912-9b15-4805-8174-7198de3cb8c1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}