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

Shingo Hayashi, Keigo Kato, Katsura Norimatsu, Masaki Hada, Yosuke Kayanuma, Kazutaka G. Nakamura

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


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.

Original languageEnglish
Article number4456
JournalScientific reports
Publication statusPublished - Mar 25 2014
Externally publishedYes

ASJC Scopus subject areas

  • General


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