Measuring quantum coherence in bulk solids using dual phase-locked optical pulses.
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ABSTRACT: 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.
SUBMITTER: Hayashi S
PROVIDER: S-EPMC3964516 | biostudies-other | 2014 Mar
REPOSITORIES: biostudies-other
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