{
  "id": "1701.07399",
  "version": "v1",
  "published": "2017-01-25T17:43:23.000Z",
  "updated": "2017-01-25T17:43:23.000Z",
  "title": "Remote Parameter Estimation in a Quantum Spin Chain Enhanced by Local Control",
  "authors": [
    "Jukka Kiukas",
    "Kazuya Yuasa",
    "Daniel Burgarth"
  ],
  "comment": "7 pages, 3 figures",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We study the interplay of control and parameter estimation on a quantum spin chain. A single qubit probe is attached to one end of the chain, while we wish to estimate a parameter on the other end. We find that control on the probe qubit can substantially improve the estimation performance and discover some interesting connections to quantum state transfer.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-01-25T17:43:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum spin chain",
      "remote parameter estimation",
      "local control",
      "single qubit probe",
      "quantum state transfer"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}