{
  "annotation_id": "3478657b-d30f-4539-895c-013528389d7b",
  "date_created": "2026-03-02T18:02:27.507000Z",
  "date_modified": "2026-03-02T18:02:27.507000Z",
  "file_hash": "6d06af793d507e68fb7fb1f2a6abff73633253ef0b1523d9818799c85b435f0c",
  "private": false,
  "record": {
    "abstract": "We report on a study of complementarity in a two-terminal \"closed-loop\"\nAharonov-Bohm interferometer. In this interferometer, the simple picture of\ntwo-path interference cannot be applied. We introduce a nearby quantum point\ncontact to detect the electron in a quantum dot inserted in the interferometer.\nWe found that charge detection reduces but does not completely suppress the\ninterference even in the limit of perfect detection. We attribute this\nphenomenon to the unique nature of the closed-loop interferometer. That is, the\nclosed-loop interferometer cannot be simply regarded as a two-path\ninterferometer because of multiple reflections of electrons. As a result, there\nexist indistinguishable paths of the electron in the interferometer and the\ninterference survives even in the limit of perfect charge detection. This\nimplies that charge detection is not equivalent to path detection in a\nclosed-loop interferometer. We also discuss the phase rigidity of the\ntransmission probability for a two-terminal conductor in the presence of a\ndetector.",
    "arxiv_id": "quant-ph/0606117",
    "authors": [
      "Gyong Luck Khym",
      "Kicheon Kang"
    ],
    "categories": [
      "quant-ph",
      "astro-ph",
      "cond-mat.mes-hall"
    ],
    "doi": "10.1103/PhysRevB.74.153309",
    "journal_ref": "Phys.Rev. B74 (2006) 153309",
    "title": "Charge Detection in a Closed-Loop Aharonov-Bohm Interferometer",
    "url": "https://arxiv.org/abs/quant-ph/0606117"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2f45b777-4957-4243-80c8-a7c41e60298b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}