{
  "id": "quant-ph/0606004",
  "version": "v2",
  "published": "2006-05-31T22:07:40.000Z",
  "updated": "2007-01-08T18:27:36.000Z",
  "title": "Noise-Free Measurement of Harmonic Oscillators with Instantaneous Interactions",
  "authors": [
    "M. Franca Santos",
    "G. Giedke",
    "E. Solano"
  ],
  "comment": "4 pages, no figure, published in Physical Review Letters",
  "journal": "Phys. Rev. Lett. 98, 020401 (2007)",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We present a method of measuring the quantum state of a harmonic oscillator through instantaneous probe-system selective interactions of the Jaynes-Cummings type. We prove that this scheme is robust to general decoherence mechanisms, allowing the possibility of measuring fast-decaying systems in the weak-coupling regime. This method could be applied to different setups: motional states of trapped ions, microwave fields in cavity/circuit QED, and even intra-cavity optical fields.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2007-01-08T18:27:36.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "harmonic oscillator",
      "noise-free measurement",
      "instantaneous interactions",
      "general decoherence mechanisms",
      "quantum state"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}