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Proceedings Paper

Subharmonic generation in a driven asymmetric quantum well
Author(s): Bjorn Birnir; Adriano A. Batista; Mark S. Sherwin
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Paper Abstract

Subharmonic generation in quantum wells may have important technological applications. Potentially it can be used to produce 'squeezed' states of THz radiation. Galdrikian and Birnir, Phys. Rec. Lett 29, 3308, derived density matrix dynamical equations for a many -body two-level system of electrons confined in an asymmetric square well. They showed numerically that the electron current density would undergo period-doubling bifurcations and thus produce subharmonics of the laser frequency (omega) . Their equations are averaged to second order at twice the frequency of the bare two-level system, (omega) 0. It is found that at (omega) equals 2(omega) 0 the period doubling bifurcation is similar to the one of the Duffing's equation.

Paper Details

Date Published: 29 April 1999
PDF: 5 pages
Proc. SPIE 3617, Terahertz Spectroscopy and Applications, (29 April 1999); doi: 10.1117/12.347120
Show Author Affiliations
Bjorn Birnir, Univ. of California/Santa Barbara (United States)
Adriano A. Batista, Univ. of California/Santa Barbara (United States)
Mark S. Sherwin, Univ. of California/Santa Barbara (United States)

Published in SPIE Proceedings Vol. 3617:
Terahertz Spectroscopy and Applications
Mark S. Sherwin, Editor(s)

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