{
  "id": "0707.2278",
  "version": "v2",
  "published": "2007-07-16T08:40:43.000Z",
  "updated": "2007-11-01T13:59:30.000Z",
  "title": "Non-Markovian entanglement dynamics of noisy continuous variable quantum channels",
  "authors": [
    "Jun-Hong An",
    "Wei-Min Zhang"
  ],
  "comment": "The final version",
  "journal": "Phys. Rev. A 76, 042127 (2007)",
  "doi": "10.1103/PhysRevA.76.042127",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We investigate the entanglement dynamics of continuous-variable quantum channels in terms of an entangled squeezed state of two cavity fields in a general non-Markovian environment. Using the Feynman-Vernon influence functional theory in the coherent-state representation, we derive an exact master equation with time-dependent coefficients reflecting the non-Markovian influence of the environment. The influence of environments with different spectral densities, e.g., Ohmic, sub-Ohmic, and super-Ohmic, is numerically studied. The non-Markovian process shows its remarkable influences on the entanglement dynamics due to the sensitive time-dependence of the dissipation and noise functions within the typical time scale of the environment. The Ohmic environment shows a weak dissipation-noise effect on the entanglement dynamics, while the sub-Ohmic and super-Ohmic environments induce much more severe noise. In particular, the memory of the system interacting with the environment contributes a strong decoherence effect to the entanglement dynamics in the super-Ohmic case.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2007-11-01T13:59:30.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.65.Yz",
      "03.67.-a"
    ],
    "keywords": [
      "noisy continuous variable quantum channels",
      "non-markovian entanglement dynamics",
      "environment",
      "feynman-vernon influence functional theory",
      "super-ohmic"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review A",
      "year": 2007,
      "month": "Oct",
      "volume": 76,
      "number": 4,
      "pages": "042127"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2007PhRvA..76d2127A"
    }
  }
}