We present a robust, transportable Ca+ optical clock, with a systematic uncertainty of 1.3×
10− 17 limited by the black-body radiation (BBR) field evaluation and an uptime rate of> …

Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clock - IOPscience This
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With the advent of optical clocks featuring fractional frequency uncertainties on the order of
10− 17 and below, new applications such as chronometric leveling with few-centimeter …

We report a robust, compact, and transportable optical clock (TOC-729-2) based on a
trapped single 40 Ca+ ion with a systematic uncertainty of 1.1× 10− 17⁠, which is limited by …

Optical atomic clocks are currently one of the most sensitive tools making it possible to
precisely test the fundamental symmetry properties of spacetime and Einstein's theory of …

The accuracy of state-of-the-art atomic clocks is derived from the insensitivity of narrow
optical atomic resonances to environmental perturbations. Two such resonances in singly …

Today's quantum optics experiments require a broad range of laser frequencies. Usually,
several continuous wave laser systems are required per experiment 1–3 which imposes …

Abstract Space optical clocks with frequency instability better than 1× 10− 15 are
increasingly demanded for PNT (positioning, navigation, and timing) and space physical …

We have developed a compact vacuum system for laser cooling and spectroscopy of neutral
thulium atoms. Compactness is achieved by obviating a classical Zeeman slower section …

Many space based gravity missions require frequency stabilized lasers with stringent
requirements. Toward those requirements, we develop a compact frequency-stabilized laser …