使用 87Sr 光学晶格钟进行费米子碰撞的精密测量，不确定度为 1 x 10(-16)。
Precision measurement of fermionic collisions using an 87Sr optical lattice clock with 1 x 10(-16) inaccuracy.
机构信息
JILA, the National Institute of Standards and Technology, and the University of Colorado, Boulder, CO, USA.
出版信息
IEEE Trans Ultrason Ferroelectr Freq Control. 2010 Mar;57(3):574-82. doi: 10.1109/TUFFC.2010.1449.
We describe recent progress on the JILA Sr optical frequency standard, which has a systematic uncertainty at the 10(¿16) fractional frequency level. The dominant contributions to the systematic error are from blackbody radiation shifts and collisional shifts. We discuss the blackbody radiation shift and propose measurements and experimental protocols that should reduce its systematic contribution. We discuss how collisional frequency shifts can arise in an optical lattice clock employing fermionic atoms, and experimentally demonstrate how the uncertainty in this density-dependent correction to the clock frequency is reduced.
我们描述了 JILA Sr 光学频率标准的最新进展，其系统不确定性在 10（¿16）分数频率水平。系统误差的主要贡献来自黑体辐射位移和碰撞位移。我们讨论了黑体辐射位移，并提出了应降低其系统贡献的测量和实验方案。我们讨论了在使用费米子原子的光学晶格钟中如何产生碰撞频率位移，并实验证明了如何降低时钟频率对该密度相关修正的不确定性。
Zotero 插件