Single-Ion Nuclear Clock for Metrology at the 19th Decimal Place

2011/10/11 by C. J. Campbell, A. G. Radnaev, A. Kuzmich +4 · 17 citations
Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #physics.atom-ph

paper · pdf · doi:10.1103/physrevlett.108.120802

arxiv created 2011/10/11 · openalex publication_date 2012/03/22 · arxiv updated 2015/05/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The 7.6(5) eV nuclear magnetic-dipole transition in a single 229Th3+ ion may provide the foundation for an optical clock of superb accuracy. A virtual clock transition composed of stretched states within the 5F(5/2) electronic ground level of both nuclear ground and isomeric manifolds is proposed. It is shown to offer unprecedented systematic shift suppression, allowing for clock performance with a total fractional inaccuracy approaching 1×10(-19).

Citations

• Absolute Frequency Measurement of theCa<mml:none/>+<mml:mprescripts/><mml:none/>404s S1/2<mml:none/><mml:mprescripts/><mml:none/>2−3d D5/2<mml:none/><mml:mprescripts/><mml:none/>2Clock Transition
• Frequency Ratio of Al+and Hg+Single-Ion Optical Clocks; Metrology at the 17th Decimal Place
• Nuclear laser spectroscopy of the 3.5 eV transition in Th-229

Cited by

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• Lifetime measurement of the ²²⁹Th nuclear isomer
• X-ray pumping of the Th-229 nuclear clock isomer
• Results of a Direct Search Using Synchrotron Radiation for the Low-EnergyTh<mml:mprescripts/><mml:none/>229Nuclear Isomeric Transition
• Radiative lifetime and energy of the low-energy isomeric level inTh<mml:mprescripts/><mml:none/>229
• Reduced transition probabilities for the gamma decay of the 7.8 eV isomer in ²²⁹Th
• Observation of the Deexcitation of theTh<mml:mprescripts/><mml:none/>229mNuclear Isomer
• Laser spectroscopic characterization of the nuclear clock isomer ^229mTh
• On an attempt to optically excite the nuclear isomer in Th-229
• Towards a 229Th-based nuclear clock
• Observation of an unexpected negative isotope shift inTh<mml:none/>+<mml:mprescripts/><mml:none/>229and its theoretical explanation
• Searching for new physics through atomic, molecular and optical precision measurements
• Isotopes of thorium [wikipedia]

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