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    "title": "Raman sideband cooling reduces molecular motion toward the quantum ground state",
    "summary": "Two teams demonstrated Raman sideband cooling of individual calcium monofluoride molecules in optical tweezers. Lu and colleagues used low magnetic fields and alternating trap depths to reduce motion along all three axes, with a radial ground-state fraction reaching about 79%. Bao and colleagues used a high-field scheme and resolved sidebands along each axis, inferring a three-dimensional motional ground-state probability of 54±18% for molecules retained in the selected internal-state manifold. Both experiments extended molecular cooling beyond optical molasses.",
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        "title": "Raman Sideband Cooling of Molecules in an Optical Tweezer Array (arXiv2306.02455v1)",
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        "date": "2023-06-04"
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        "title": "Raman sideband cooling of molecules in an optical tweezer array to the3-D motional ground state (arXiv2309.08706v1)",
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            "citation": "Raman sideband cooling of molecules in an optical tweezer array to the3-D motional ground state (arXiv2309.08706v1)",
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          "name": "Jiaqi You",
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            "citation": "Raman sideband cooling of molecules in an optical tweezer array to the3-D motional ground state (arXiv2309.08706v1)",
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            "citation": "Raman sideband cooling of molecules in an optical tweezer array to the3-D motional ground state (arXiv2309.08706v1)",
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            "citation": "Raman sideband cooling of molecules in an optical tweezer array to the3-D motional ground state (arXiv2309.08706v1)",
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        "description": "The two experiments used different schemes and reached different states. The lowest radial and axial occupations reported by Lu occurred after different cooling sequences; that experiment did not establish the same three-dimensional ground-state fraction as Bao. Bao’s fraction applies to the selected internal-state population, with substantial leakage to other states. Thermometry assumes specified motional distributions and calibrated spectra. Quantum gates, bulk quantum degeneracy and applicability to arbitrary molecules were prospective uses.",
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        {
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      "statement": "# Raman sideband cooling reduces molecular motion toward the quantum ground state\n\nTwo teams demonstrated Raman sideband cooling of individual calcium monofluoride molecules in optical tweezers. Lu and colleagues used low magnetic fields and alternating trap depths to reduce motion along all three axes, with a radial ground-state fraction reaching about 79%. Bao and colleagues used a high-field scheme and resolved sidebands along each axis, inferring a three-dimensional motional ground-state probability of 54±18% for molecules retained in the selected internal-state manifold. Both experiments extended molecular cooling beyond optical molasses.\n\n## Scientific scope\n\nThe two experiments used different schemes and reached different states. The lowest radial and axial occupations reported by Lu occurred after different cooling sequences; that experiment did not establish the same three-dimensional ground-state fraction as Bao. Bao’s fraction applies to the selected internal-state population, with substantial leakage to other states. Thermometry assumes specified motional distributions and calibrated spectra. Quantum gates, bulk quantum degeneracy and applicability to arbitrary molecules were prospective uses.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nYukai Lu; Samuel J. Li; Connor M. Holland; Lawrence W. Cheuk; Yicheng Bao; Scarlett S. Yu; Jiaqi You; Loïc Anderegg; Eunmi Chae; Wolfgang Ketterle; Kang-Kuen Ni; John M. Doyle\n\nThese are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.\n\n\n\n## Original sources\n\n- [Raman Sideband Cooling of Molecules in an Optical Tweezer Array (arXiv2306.02455v1)](https://arxiv.org/pdf/2306.02455v1)\n- [Raman sideband cooling of molecules in an optical tweezer array to the3-D motional ground state (arXiv2309.08706v1)](https://arxiv.org/pdf/2309.08706v1)\n",
      "summary": "Two teams demonstrated Raman sideband cooling of individual calcium monofluoride molecules in optical tweezers. Lu and colleagues used low magnetic fields and alternating trap depths to reduce motion along all three axes, with a radial ground-state fraction reaching about 79%. Bao and colleagues used a high-field scheme and resolved sidebands along each axis, inferring a three-dimensional motional ground-state probability of 54±18% for molecules retained in the selected internal-state manifold. Both experiments extended molecular cooling beyond optical molasses.",
      "title": "Raman sideband cooling reduces molecular motion toward the quantum ground state"
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    "title": "Raman sideband cooling reduces molecular motion toward the quantum ground state",
    "context": "Atomic and molecular physics / quantum motional cooling",
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    "what_changed": "Two teams demonstrated Raman sideband cooling of individual calcium monofluoride molecules in optical tweezers. Lu and colleagues used low magnetic fields and alternating trap depths to reduce motion along all three axes, with a radial ground-state fraction reaching about 79%. Bao and colleagues used a high-field scheme and resolved sidebands along each axis, inferring a three-dimensional motional ground-state probability of 54±18% for molecules retained in the selected internal-state manifold. Both experiments extended molecular cooling beyond optical molasses.",
    "scope": "Two teams demonstrated Raman sideband cooling of individual calcium monofluoride molecules in optical tweezers. Lu and colleagues used low magnetic fields and alternating trap depths to reduce motion along all three axes, with a radial ground-state fraction reaching about 79%. Bao and colleagues used a high-field scheme and resolved sidebands along each axis, inferring a three-dimensional motional ground-state probability of 54±18% for molecules retained in the selected internal-state manifold. Both experiments extended molecular cooling beyond optical molasses. The two experiments used different schemes and reached different states. The lowest radial and axial occupations reported by Lu occurred after different cooling sequences; that experiment did not establish the same three-dimensional ground-state fraction as Bao. Bao’s fraction applies to the selected internal-state population, with substantial leakage to other states. Thermometry assumes specified motional distributions and calibrated spectra. Quantum gates, bulk quantum degeneracy and applicability to arbitrary molecules were prospective uses.",
    "evidence_summary": "The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. The two experiments used different schemes and reached different states. The lowest radial and axial occupations reported by Lu occurred after different cooling sequences; that experiment did not establish the same three-dimensional ground-state fraction as Bao. Bao’s fraction applies to the selected internal-state population, with substantial leakage to other states. Thermometry assumes specified motional distributions and calibrated spectra. Quantum gates, bulk quantum degeneracy and applicability to arbitrary molecules were prospective uses.",
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