Engineering Quantum States of Matter for Atomic Clocks in Shallow Optical Lattices

被引：37

作者：

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

Goban, Akihisa ^{[1
,2
,3
]}

Marti, G. Edward ^{[1
,2
,3
,4
]}

Sonderhouse, Lindsay ^{[1
,2
,3
]}

Sanner, Christian ^{[1
,2
,3
]}

Ye, Jun ^{[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] Stanford Univ, Dept Mol & Cellular Physiol, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2019年 / 123卷 / 12期

基金：

日本学术振兴会;

关键词：

INTERACTING FERMIONS; UNCERTAINTY;

D O I：

10.1103/PhysRevLett.123.123401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the effects of stimulated scattering of optical lattice photons on atomic coherence times in a state-of-the art Sr-87 optical lattice clock. Such scattering processes are found to limit the achievable coherence times to less than 12 s (corresponding to a quality factor of 1 x 10(16)), significantly shorter than the predicted 145(40) s lifetime of Sr-87's excited clock state. We suggest that shallow, state-independent optical lattices with increased lattice constants can give rise to sufficiently small lattice photon scattering and motional dephasing rates as to enable coherence times on the order of the clock transition's natural lifetime. Not only should this scheme be compatible with the relatively high atomic density associated with Fermi-degenerate gases in three-dimensional optical lattices, but we anticipate that certain properties of various quantum states of matter-such as the localization of atoms in a Mott insulator-can be used to suppress dephasing due to tunneling.

引用

页数：6

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