A pyramid MOT with integrated optical cavities as a cold atom platform for an optical lattice clock

Autor: Alvise Vianello, William B. Bowden, Helen S. Margolis, Patrick E. G. Baird, Alissa Silva, Marco Schioppo, Richard Hobson, Patrick Gill, Ian R. Hill
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
Scientific Reports
ISSN: 2045-2322
DOI: 10.1038/s41598-019-48168-3
Popis: We realize a two-stage, hexagonal pyramid magneto-optical trap (MOT) with strontium, and demonstrate loading of cold atoms into cavity-enhanced 1D and 2D optical lattice traps, all within a single compact assembly of in-vacuum optics. We show that the device is suitable for high-performance quantum technologies, focusing especially on its intended application as a strontium optical lattice clock. We prepare 2 × 104 spin-polarized atoms of 87Sr in the optical lattice within 500 ms; we observe a vacuum-limited lifetime of atoms in the lattice of 27 s; and we measure a background DC electric field of 12 V m−1 from stray charges, corresponding to a fractional frequency shift of (−1.2 ± 0.8) × 10−18 to the strontium clock transition. When used in combination with careful management of the blackbody radiation environment, the device shows potential as a platform for realizing a compact, robust, transportable optical lattice clock with systematic uncertainty at the 10−18 level.
Databáze: OpenAIRE
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