Experimental Evidence for Quantum Tunneling Time

被引：181

作者：

Camus, Nicolas ^{[1
]}

Yakaboylu, Enderalp ^{[1
,2
]}

Fechner, Lutz ^{[1
]}

Klaiber, Michael ^{[1
]}

Laux, Martin ^{[1
]}

Mi, Yonghao ^{[1
]}

Hatsagortsyan, Karen Z. ^{[1
]}

Pfeifer, Thomas ^{[1
]}

Keitel, Christoph H. ^{[1
]}

Moshammer, Robert ^{[1
]}

机构：

[1] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany

[2] IST Austria, Campus 1, A-3400 Klosterneuburg, Austria

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 119卷 / 02期

关键词：

ABOVE-THRESHOLD-IONIZATION; REACTION-MICROSCOPES; FIELD IONIZATION; LASER FIELDS; DELAY-TIME; ATOMS; DIFFRACTION; BARRIER; HELIUM; PHASE;

D O I：

10.1103/PhysRevLett.119.023201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The first hundred attoseconds of the electron dynamics during strong field tunneling ionization are investigated. We quantify theoretically how the electron's classical trajectories in the continuum emerge from the tunneling process and test the results with those achieved in parallel from attoclock measurements. An especially high sensitivity on the tunneling barrier is accomplished here by comparing the momentum distributions of two atomic species of slightly deviating atomic potentials (argon and krypton) being ionized under absolutely identical conditions with near-infrared laser pulses (1300 nm). The agreement between experiment and theory provides clear evidence for a nonzero tunneling time delay and a nonvanishing longitudinal momentum of the electron at the "tunnel exit."

引用

页数：6

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