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9th Symposium on Frequency Standards and Metrology

16–20 Oct 2023
Kingscliff, NSW, Australia
Australia/Sydney timezone

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Session

Optical Ion Clocks II

16 Oct 2023, 16:00
Kingscliff, NSW, Australia

Kingscliff, NSW, Australia

Mantra on Salt Beach Kingscliff, Tweed Coast Gunnamatta Avenue, Kingscliff NSW

Conveners

Optical Ion Clocks II

  • Tingrei Tan

Presentation materials

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  1. 61. 171Yb+ optical clock at NPL for frequency metrology and tests of fundamental physics
    Anne Curtis
    16/10/2023, 16:00
    Molecular, Atomic, Ion and Nuclear Clocks
    Invited Oral

    We will report on absolute E3 frequency measurements and E3/E2 optical frequency ratio measurements in $^{171}$Yb$^+$, local $^{171}$Yb$^+$/ $^{87}$Sr clock frequency ratios, related uncertainty budgets, and improvements in automation and robust operation of the $^{171}$Yb$^+$ clock system at NPL. We will also show how these measurement results have been used to constrain temporal variation of...

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  2. 138. Quantum state control and precision spectroscopy of single molecular ions
    Dr Chin-wen Chou (NIST)
    16/10/2023, 16:30
    Molecular, Atomic, Ion and Nuclear Clocks
    Invited Oral

    Over the past decades, atoms are trapped and laser cooled to near zero temperature, minimizing the motional effects in spectroscopy. Internal states of atoms can be coherently manipulated and pre-pared in pure quantum states, including entangled states that are impactful in quantum information processing, sensing, and metrology. This talk will describe the effort of the Ion Storage group at...

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  3. 13. Ca+ Optical clocks with Systematic Uncertainties at the 10(-18) level
    Yao Huang (Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences)
    16/10/2023, 17:00
    Molecular, Atomic, Ion and Nuclear Clocks
    Invited Oral

    Here our progress on the Ca+ ion optical clocks for the last few years will be reported, including both the laboratory clocks and the transportable clock.
    First of all, the clock stability is greatly improved, with long term stability reaches the E-18 level; recently with a low E-16 level stability clock laser, the clock stability has been improved to ~ 1E-15/√τ, about another factor of 2...

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