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

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....

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Published inScientific reports Vol. 4; no. 1; p. 4456
Main Authors Hayashi, Shingo, Kato, Keigo, Norimatsu, Katsura, Hada, Masaki, Kayanuma, Yosuke, Nakamura, Kazutaka G.
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 25.03.2014
Nature Publishing Group
Subjects
140/125
639/766/119/995
639/766/400/584
Humanities and Social Sciences
multidisciplinary
Science
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ISSN2045-2322
2045-2322
DOI10.1038/srep04456

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Summary: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 ~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.
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ISSN:2045-2322
2045-2322
DOI:10.1038/srep04456