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Dynamical Fano-Like Interference between Rabi Oscillations and Coherent Phonons in a Semiconductor Microcavity

S Yoshino¹, G Oohata¹, K Mizoguchi¹

¹Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Japan.

Physical Review Letters

|November 10, 2015

Summary

This summary is machine-generated.

We observed dynamical interference between Rabi oscillations and coherent phonons in CuCl semiconductor microcavities. This coupling enhances phonon intensity and creates asymmetric spectral structures due to constructive and destructive interference.

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Area of Science:

Condensed Matter Physics
Semiconductor Optics
Quantum Dynamics

Background:

Semiconductor microcavities exhibit complex light-matter interactions.
Coherent phonons and Rabi oscillations are key phenomena in ultrafast spectroscopy.
Understanding their interplay is crucial for advanced optical devices.

Purpose of the Study:

To investigate the dynamical interference between Rabi oscillations and coherent phonons in CuCl.
To elucidate the coupling mechanisms and their impact on spectral properties.
To model the observed interference phenomena.

Main Methods:

Time-domain pump-probe spectroscopy on CuCl semiconductor microcavities.
Fourier transformation of time-domain signals.
Continuous wavelet transformation for time-frequency analysis.
Classical coupled oscillator modeling.

Main Results:

Rabi oscillations were found to drive coherent longitudinal optical phonons in CuCl via Fröhlich interaction.
Phonon intensity increased with Rabi oscillation intensity.
Spectral profiles of coherent phonons shifted from peak to dip with asymmetric structures upon frequency detuning.
Interference patterns were attributed to constructive and destructive interference between oscillations and phonons.

Conclusions:

Dynamical Fano-like interference governs the interaction between Rabi oscillations and coherent phonons.
A classical coupled oscillator model accurately reproduces the observed asymmetric spectral structures.
This study provides insights into controlling phonon behavior through light-matter coupling in semiconductors.