{
  "id": "1909.08640",
  "version": "v1",
  "published": "2019-09-18T18:00:24.000Z",
  "updated": "2019-09-18T18:00:24.000Z",
  "title": "Variational Quantum Simulation of Ultrastrong Light-Matter Coupling",
  "authors": [
    "Agustin Di Paolo",
    "Panagiotis Kl. Barkoutsos",
    "Ivano Tavernelli",
    "Alexandre Blais"
  ],
  "categories": [
    "quant-ph"
  ],
  "abstract": "We propose the simulation of quantum-optical systems in the ultrastrong-coupling regime using a variational quantum algorithm. More precisely, we introduce a short-depth variational form to prepare the groundstate of the multimode Dicke model on a quantum processor and present proof-of-principle results obtained via cloud access to an IBM device. We moreover provide an algorithm for characterizing the groundstate by Wigner state tomography. Our work is a first step towards digital quantum simulation of quantum-optical systems with potential applications to the spin-boson, Kondo and Jahn-Teller models.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-09-18T18:00:24.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "variational quantum simulation",
      "ultrastrong light-matter coupling",
      "quantum-optical systems",
      "variational quantum algorithm",
      "short-depth variational form"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}