output
20002026
most citedAtomic clock performance beyond the geodetic limit

732 citations

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13 papers · 1 filter

physics.atom-ph2026

Efficient Three-Dimensional Sub-Doppler Cooling of Ca in a Penning Trap

Brian J. McMahon, Brian C. Sawyer

We demonstrate efficient sub-Doppler laser cooling of the three eigenmodes of a Ca ion confined in a compact Penning trap operating with a magnetic field of 0.91 T. Usin…

physics.atom-ph2024★ 3 cited

Absorption Spectroscopy of Ca Atomic Beams Produced via Pulsed Laser Ablation: A Quantitative Comparison of Ca and CaTiO Targets

Kevin D. Battles, Brian J. McMahon, Brian C. Sawyer

Pulsed laser ablation is an increasingly prevalent method for fast ion trap loading of various species, however characteristics of the ablation target source material can affect th…

physics.atom-ph2024★ 9 cited

Individual-Ion Addressing and Readout in a Penning Trap

Brian J. McMahon, Kenton R. Brown, Creston D. Herold +1

We implement individual addressing and readout of ions in a rigidly rotating planar crystal in a compact, permanent magnet Penning trap. The crystal of Ca is trapped and…

physics.atom-ph2022★ 33 cited

Modeling Line Broadening and Distortion Due to Spatially Non-Uniform Fields in Rydberg Electrometry

Andrew P. Rotunno, Amy K. Robinson, Samuel Berweger +4

We present a model for calculating broadened Autler-Townes spectra when probing ac electric field magnitudes by use of Rydberg atom electromagnetically-induced transparency. This m…

physics.atom-ph2022★ 31 cited

Very-high- and ultrahigh- frequency electric field detection using high angular momentum Rydberg states

Roger C. Brown, Baran Kayim, Michael A. Viray +3

We demonstrate resonant detection of rf electric fields from 240 MHz to 900 MHz (very-high-frequency (VHF) to ultra-high-frequency (UHF)) using electromagnetically induced transpar…

physics.atom-ph2021★ 12 cited

Second-Scale Spin Coherence in a Compact Penning Trap

Brian J. McMahon, Brian C. Sawyer

We report microwave spectroscopy of co-trapped and within a compact permanent-magnet-based Penning ion trap. The trap is constructed with a recon…