Narrow-band microwave radiation from a biased single-Cooper-pair transistor.

{
  "study_type": "engineering",
  "exposure": {
    "band": "microwave",
    "source": "single-Cooper-pair transistor (SCPT) electrometer emission",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "narrow-band microwave radiation emission",
    "spectroscopic detection via photoexcitation of quasiparticle tunneling",
    "identification of emission lines (Josephson radiation; radiative transport processes)",
    "potential disruption of nearby superconducting/qubit-like circuits by dissipative electrometer"
  ],
  "main_findings": "A single-Cooper-pair transistor electrometer emitted narrow-band microwave radiation when biased in the subgap region, detected spectroscopically using photoexcitation of quasiparticle tunneling in a nearby SCPT. Emission lines were attributed to Josephson radiation and radiative transport processes, and the authors argue such an electrometer can disrupt the system it measures.",
  "effect_direction": "harm",
  "limitations": [
    "No frequencies or power levels of the emitted radiation are provided in the abstract.",
    "No biological/health outcomes are studied; results pertain to superconducting circuit interference/disruption.",
    "Sample size and experimental replication details are not stated in the abstract."
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave radiation",
    "narrow-band emission",
    "single-Cooper-pair transistor",
    "SCPT electrometer",
    "Josephson radiation",
    "quasiparticle tunneling",
    "spectroscopy",
    "superconducting circuits",
    "qubit-electrometer integrated circuit"
  ],
  "suggested_hubs": []
}