arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1507.02427physics.atom-ph
收藏

里德伯态寿命的全光测量

All-optical measurement of Rydberg state lifetimes

Markus Mack, Jens Grimmel, Florian Karlewski, Lőrinc Sárkány, Helge Hattermann, József Fortágh

摘要:

我们已经开发了一种全光学方法测量$n S$和$n D$里德堡态的寿命,并证明其能力与测量超冷${}^{87}$ Rb原子在低温环境中的稀释云。该方法是基于时间分辨观察共振光吸收的基态原子和选择性转移的里德伯原子到基态在不同的延迟时间,以重建里德伯衰减曲线。我们的${}^{87}$ Rb $30S_{1/2}$状态的测量表明,在较低的环境温度下的寿命增加,如预期的那样,由于减少了黑体辐射。对于具有吸引偶极-偶极相互作用的$38D_{5/2}$态,观察到由于碰撞效应导致的电离和寿命降低。

英文摘要:

We have developed an all-optical method for measuring the lifetimes of $n S$ and $n D$ Rydberg states and demonstrate its capabilities with measurements on a dilute cloud of ultracold ${}^{87}$Rb atoms in a cryogenic environment. The method is based on the time-resolved observation of resonant light absorption by ground state atoms and selective transfer of Rydberg atoms into the ground state at varying delay times in order to reconstruct Rydberg decay curves. Our measurements of the ${}^{87}$Rb $30S_{1/2}$ state indicate an increase of the lifetime at lowered environment temperatures, as expected due to decreased black body radiation. For the $38D_{5/2}$ state with an attractive dipole-dipole interaction, ionization and lifetime reduction due to collisional effects are observed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑