{
  "id": "2301.08156",
  "version": "v1",
  "published": "2023-01-19T16:20:41.000Z",
  "updated": "2023-01-19T16:20:41.000Z",
  "title": "A phonon laser in the quantum regime",
  "authors": [
    "T. Behrle",
    "T. L. Nguyen",
    "F. Reiter",
    "D. Baur",
    "B. de Neeve",
    "M. Stadler",
    "M. Marinelli",
    "F. Lancellotti",
    "S. F. Yelin",
    "J. P. Home"
  ],
  "categories": [
    "quant-ph",
    "physics.atom-ph"
  ],
  "abstract": "We demonstrate a trapped-ion system with two competing dissipation channels, implemented independently on two ion species co-trapped in a Paul trap. By controlling coherent spin-oscillator couplings and optical pumping rates we explore the phase diagram of this system, which exhibits a regime analogous to that of a (phonon) laser but operates close to the quantum ground state with an average phonon number of $\\bar{n}<10$. We demonstrate phase locking of the oscillator to an additional resonant drive, and also observe the phase diffusion of the resulting state under dissipation by reconstructing the quantum state from a measurement of the characteristic function.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-01-19T16:20:41.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum regime",
      "phonon laser",
      "controlling coherent spin-oscillator couplings",
      "quantum ground state",
      "average phonon number"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}