Sitaram, A.
, Elgee, P.
, Campbell, G.
, Barker, D.
, Klimov, N.
and Eckel, S.
(2020),
Confinement of an alkaline-earth element in a grating magneto-optical trap, Physical Review Applied (Accessed April 24, 2026)
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Confinement of an alkaline-earth element in a grating magneto-optical trap
Published
Author(s)
Ananya Sitaram, Peter Elgee, , , ,
Abstract
We demonstrate a compact magneto-optical trap (MOT) of alkaline-earth atoms using a nanofabricated diffraction grating chip. A single input laser beam, resonant with the broad 1S0 to 1P1 transition of strontium, forms the MOT in combination with three diffracted beams from the grating chip and a magnetic field produced by permanent magnets. A differential pumping tube limits the effect of the heated, effusive source on the background pressure in the trapping region. The system has a total volume of around 2.4 L. With our setup, we have trapped up to 5 x 10^6 88Sr atoms, at a temperature of approximately 6 mK, and with a trap lifetime of approximately 1 s. Our results will aid the effort to miniaturize optical atomic clocks and other quantum technologies based on alkaline-earth atoms.Citation
Physical Review Applied
Pub Type
Journals
Keywords
Laser Cooling, ultracold atoms, atomic clocks
Citation
Issues
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Created October 14, 2020, Updated October 12, 2021