Detrimental adsorbate fields in experiments with cold Rydberg gases near surfaces

被引：61

作者：

Hattermann, H. ^{[1
]}

Mack, M. ^{[1
]}

Karlewski, F. ^{[1
]}

Jessen, F. ^{[1
]}

Cano, D. ^{[1
]}

Fortagh, J. ^{[1
]}

机构：

[1] Univ Tubingen, Inst Phys, CQ Ctr Collect Quantum Phenomena & Their Applicat, D-72076 Tubingen, Germany

来源：

PHYSICAL REVIEW A | 2012年 / 86卷 / 02期

基金：

欧洲研究理事会;

关键词：

QUANTUM; ATOMS;

D O I：

10.1103/PhysRevA.86.022511

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We observe the shift of Rydberg levels of rubidium close to a copper surface when atomic clouds are repeatedly deposited on it. We measure transition frequencies of rubidium to S and D Rydberg states with principal quantum numbers n between 31 and 48 using the technique of electromagnetically induced transparency. The spectroscopic measurement shows a strong increase of electric fields towards the surface that evolves with the deposition of atoms. Starting with a clean surface, we measure the evolution of electrostatic fields in the range between 30 and 300 mu m from the surface. We find that after the deposition of a few hundred atomic clouds, each containing similar to 10(6) atoms, the field of adsorbates reaches 1 V/cm for a distance of 30 mu m from the surface. This evolution of the electrostatic field sets serious limitations on cavity QED experiments proposed for Rydberg atoms on atom chips.

引用

页数：4

共 22 条

[1] Electrometry near a dielectric surface using Rydberg electromagnetically induced transparency [J].