Single-molecule pump-probe detection resolves ultrafast pathways in individual and coupled quantum systems -: art. no. 078302

被引：64

作者：

van Dijk, EMHP ^{[1
]}

Hernando, J ^{[1
]}

García-López, JJ ^{[1
]}

Crego-Calama, M ^{[1
]}

Reinhoudt, DN ^{[1
]}

Kuipers, L ^{[1
]}

García-Parajó, MF ^{[1
]}

van Hulst, NF ^{[1
]}

机构：

[1] Univ Twente, Appl Opt Grp, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.94.078302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first experimental study of individual molecules with femtosecond time resolution using a novel ultrafast single-molecule pump-probe method. A wide range of relaxation times from below 100 up to 400 fs is found, revealing energy redistribution over different vibrational modes and phonon coupling to the nanoenvironment. Addressing quantum-coupled molecules we find longer decay times, pointing towards inhibited intramolecular decay due to delocalized excitation. Interestingly, each individual system shows discrete jumps in femtosecond response, reflecting sudden breakup of the coupled superradiant state.

引用

页数：4

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