{
  "abstract": "A tilted nonselective measurement can close the upper transition of a three-level quantum refrigerator, but it also generates coherence that feeds back on the populations and suppresses the cooling current. We formulate randomized open-loop control of the measurement azimuthal phase \\(α\\), sampled independently at each event from a probability distribution \\(P(α)\\), while keeping the event rate, polar angle, and single-event population-transfer probability fixed. Direct population transfer is phase independent, whereas the coherence source carries the factor \\(e^{-iα}\\). Exact elimination of the stationary coherence gives \\(0\\leq k_{\\rm eff}[P]\\leq A_m\\), where \\(k_{\\rm eff}[P]\\) is the effective population-transfer rate between the upper levels and \\(A_m\\) is the bare direct mixing rate. When the fixed measurement couples populations and coherence, the upper bound is attained if and only if \\(\\langle e^{iα}\\rangle_P=0\\), where \\(\\langle\\cdot\\rangle_P\\) denotes an average over the phase distribution. The minimal realization uses two equally weighted phases separated by \\(π\\): the population-to-coherence source and its return to the populations then vanish at the generator level, while the full direct mixing remains. Because the cold current increases strictly with \\(k_{\\rm eff}\\) in the refrigeration window, the same condition maximizes the stationary cooling power over the independent random-phase distributions considered here. For one representative parameter set, phase cycling increases the fixed-gap cooling power by about \\(32\\%\\) relative to a fixed-phase measurement, while leaving the ratio of extracted cold heat to supplied measurement energy unchanged.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.04237",
  "author_total": 4,
  "authors": [
    {
      "name": "Jinkai Liu"
    },
    {
      "name": "Xian He"
    },
    {
      "name": "Jizhou He"
    },
    {
      "name": "Jianhui Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cyhh4b3yqnsew.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.04237",
  "fulltext_url": null,
  "id": "cyhh4b3yqnsew",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.04237",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "3109|Advanced Thermodynamics and Statistical Mechanics"
    ]
  ],
  "openalex": "W7220711920",
  "pdf_url": "https://arxiv.org/pdf/2610.04237",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cyhh4b3yqnsew.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2610.04237",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.04237"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Optimal phase control of a measurement-assisted quantum refrigerator",
  "title_text": "Optimal phase control of a measurement-assisted quantum refrigerator",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/cyhh4b3yqnsew",
  "venue": "arXiv",
  "versions": []
}