Confinement of an alkaline-earth element in a grating magneto-optical trap

被引：29

作者：

Sitaram, A. ^{[1
]}

Elgee, P. K. ^{[1
]}

Campbell, G. K. ^{[1
]}

Klimov, N. N. ^{[2
]}

Eckel, S. ^{[2
]}

Barker, D. S. ^{[1
]}

机构：

[1] NIST, Joint Quantum Inst, Gaithersburg, MD 20899 USA

[2] NIST, Sensor Sci Div, Gaithersburg, MD 20899 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2020年 / 91卷 / 10期

关键词：

SINGLE-LASER; BEAM; ATOMS; CHIP;

D O I：

10.1063/5.0019551

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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 S-1(0) -> P-1(1) 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) Sr-88 atoms at a temperature of similar to 6 mK, and with a trap lifetime of similar to 1 s. Our results will aid the effort to miniaturize quantum technologies based on alkaline-earth atoms.

引用

页数：6

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