{
  "annotation_id": "48160129-78cd-4642-b74f-400b4ab7fdba",
  "date_created": "2026-03-02T18:00:29.373000Z",
  "date_modified": "2026-03-02T18:00:29.373000Z",
  "file_hash": "41b2e65c2df4b03d3b45506b888c618aaae8690ed49d5f1c9298c37e7d6ebe6b",
  "private": false,
  "record": {
    "abstract": "We study the dynamics of the reduced density matrix(RDM) of the field in the\nmicromaser. The resonator is pumped by N-atomic clusters of two-level atoms. At\neach given instant there is only one cluster in the cavity. We find the\nconditions of the independent evolution of the matrix elements of RDM belonging\nto a (sub)diagonal of the RDM, i.e. conditions of the diagonal invariance for\nthe case of pumping by N-atomic clusters. We analyze the spectrum of the\nevolution operator of the RDM and discover the existence of the quasitrapped\nstates of the field mode. These states exist for a wide range of number of\natoms in the cluster as well as for a broad range of relaxation rates. We\ndiscuss the hierarchy of dynamical processes in the micromaser and find an\nimportant property of the field states corresponding to the quasi-equilibrium:\nthese states are close to either Fock states or to a superposition of the Fock\nstates. A possibility to tune the distribution function of photon numbers is\ndiscussed.",
    "arxiv_id": "physics/0001018",
    "authors": [
      "Georgii Miroshnichenko",
      "Andrei Rybin",
      "Ilia Vadeiko",
      "Jussi Timonen"
    ],
    "categories": [
      "physics.optics"
    ],
    "title": "Hierarchy of time scales and quasitrapping in the N-atom micromaser",
    "url": "https://arxiv.org/abs/physics/0001018"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8d8f899d-4978-4cc3-a216-e36558bea3d9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}