van der Waals explosion of cold Rydberg clusters

被引：34

作者：

Faoro, R. ^{[1
,2
]}

Simonelli, C. ^{[1
,3
]}

Archimi, M. ^{[1
]}

Masella, G. ^{[1
]}

Valado, M. M. ^{[1
,3
]}

Arimondo, E. ^{[1
,3
,4
]}

Mannella, R. ^{[1
,4
]}

Ciampini, D. ^{[1
,3
,4
]}

Morsch, O. ^{[1
,3
]}

机构：

[1] Univ Pisa, Dipartimento Fis E Fermi, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy

[2] Univ Paris 11, Lab Aime Cotton, CNRS, ENS Cachan, Campus Orsay,Bat 505, F-91405 Orsay, France

[3] INO CNR, Via Giovanni Moruzzi 1, I-56124 Pisa, Italy

[4] Univ Pisa, CNISM UdR Dipartimento Fis E Fermi, Largo Pontecorvo 3, I-56127 Pisa, Italy

来源：

PHYSICAL REVIEW A | 2016年 / 93卷 / 03期

基金：

欧盟地平线“2020”;

关键词：

ATOMS; BLOCKADE; MOLECULES; REGIME; GAS;

D O I：

10.1103/PhysRevA.93.030701

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the direct measurement in real space of the effect of the van der Waals forces between individual Rydberg atoms on their external degrees of freedom. Clusters of Rydberg atoms with interparticle distances of around 5 mu m are created by first generating a small number of seed excitations in amagneto-optical trap, followed by off-resonant excitation that leads to a chain of facilitated excitation events. After a variable expansion time the Rydberg atoms are field ionized, and from the arrival time distributions the size of the Rydberg cluster after expansion is calculated. Our experimental results agree well with a numerical simulation of the van der Waals explosion.

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页数：5

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