Signatures of phonon coherent states View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1998-07

AUTHORS

N. Terzi

ABSTRACT

Creation and detection of states of the phonon field are discussed. I briefly compare phonon coherent states (PCS) with Fock and thermal states in two harmonic systems, the diatomic molecules and a non-conducting crystal with local centers. I analyze some of the phenomenology suggesting the cases where PCS are generated and report on their unmistakable fingerprint: the Poisson distribution among the Fock states and the oscillating Gaussian of the displaced oscillator generated in ultrafast processes. The PCS created in the “pump and probe” femtosecond spectroscopy are specially commented. The motion of PCS is seen to be responsible of the persistent oscillations discovered at ultrashort times, but also, in rare cases, of a very fast decay when a true acoustical PCS is created by the ultrafast excitation. More... »

PAGES

899-905

References to SciGraph publications

  • 1983. Coherent Wavepackets of Phonons in COLLECTIVE EXCITATIONS IN SOLIDS
  • 1986. Femtosecond Vibrational Relaxation of the F2 + Center in LiF in ULTRAFAST PHENOMENA V
  • Journal

    TITLE

    Il Nuovo Cimento D

    ISSUE

    7-8

    VOLUME

    20

    Author Affiliations

    Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf03185492

    DOI

    http://dx.doi.org/10.1007/bf03185492

    DIMENSIONS

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