Measuring quantum coherence in bulk solids using dual phase-locked optical pulses

被引：10

作者：

Hayashi, Shingo ^{[1
,2
]}

Kato, Keigo ^{[1
,2
]}

Norimatsu, Katsura ^{[1
,2
]}

Hada, Masaki ^{[1
,3
]}

Kayanuma, Yosuke ^{[1
,2
]}

Nakamura, Kazutaka G. ^{[1
,2
]}

机构：

[1] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

[2] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

[3] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

SCIENTIFIC REPORTS | 2014年 / 4卷

基金：

日本学术振兴会;

关键词：

PHONON OSCILLATIONS; SCATTERING; CRYSTAL;

D O I：

10.1038/srep04456

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Electronic and phonon coherence are usually measured in different ways because their time-scales are very different. In this paper we simultaneously measure the electronic and phonon coherence using the interference of the electron-phonon correlated states induced by two phase-locked optical pulses. Interferometric visibility showed that electronic coherence remained in a semiconducting GaAs crystal until similar to 40 fs; in contrast, electronic coherence disappeared within 10 fs in a semimetallic Bi crystal at room temperature, differing substantially from the long damping time of its phonon coherence, in the picosecond range.

引用

页数：5

共 28 条

[1] A MATHEMATICAL MODEL FOR THE NARROWING OF SPECTRAL LINES BY EXCHANGE OR MOTION [J].