A Fermi-degenerate three-dimensional optical lattice clock

被引：329

作者：

Campbell, S. L. ^{[1
,2
,3
]}

Hutson, R. B. ^{[1
,2
,3
]}

Marti, G. E. ^{[1
,2
]}

Goban, A. ^{[1
,2
]}

Oppong, N. Darkwah ^{[1
,2
,4
]}

McNally, R. L. ^{[1
,2
,3
,5
]}

Sonderhouse, L. ^{[1
,2
,3
]}

Robinson, J. M. ^{[1
,2
,3
]}

Zhang, W. ^{[1
,2
,6
]}

Bloom, B. J. ^{[1
,2
,3
,7
]}

Ye, J. ^{[1
,2
,3
]}

机构：

[1] NIST, JILA, 440 UCB, Boulder, CO 80309 USA

[2] Univ Colorado, 440 UCB, Boulder, CO 80309 USA

[3] Univ Colorado, Dept Phys, 390 UCB, Boulder, CO 80309 USA

[4] Max Planck Inst Quantum Opt, Hans Kopfermann Str 1, D-85748 Garching, Germany

[5] Columbia Univ, Dept Phys, 538 West 120th St, New York, NY 10027 USA

[6] NIST, 325 Broadway, Boulder, CO 80305 USA

[7] Rigetti Comp, 775 Heinz Ave, Berkeley, CA 94710 USA

来源：

SCIENCE | 2017年 / 358卷 / 6359期

基金：

日本学术振兴会;

关键词：

SPIN-EXCHANGE INTERACTIONS; MOTT INSULATOR; ATOMIC CLOCK; GAS;

D O I：

10.1126/science.aam5538

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Strontium optical lattice clocks have the potential to simultaneously interrogate millions of atoms with a high spectroscopic quality factor of 4 x 10(17). Previously, atomic interactions have forced a compromise between clock stability, which benefits from a large number of atoms, and accuracy, which suffers from density-dependent frequency shifts. Here we demonstrate a scalable solution that takes advantage of the high, correlated density of a degenerate Fermi gas in a three-dimensional (3D) optical lattice to guard against on-site interaction shifts. We show that contact interactions are resolved so that their contribution to clock shifts is orders of magnitude lower than in previous experiments. A synchronous clock comparison between two regions of the 3D lattice yields a measurement precision of 5 x 10(-19) in 1 hour of averaging time.

引用

页码：90 / 93

页数：4

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