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Updated: Jun 23, 2026

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
Published on: December 3, 2013
Four wave mixing in the scattering of Bose-Einstein condensates
Abstract:
The nonlinear coupling term in the Gross-Pitiaevski equation which describes a Bose-Einstein condensate (BEC) can cause four- wave mixing (4WM) if three BEC wavepackets with momenta k1, k2, and k3 interact. The interaction will produce a fourth wavepacket with momentum k4 = k1 + k2. We study this process using numerical models and suggest that experiments are feasible. Conservation of energy and momentum have different consequences for 4WM with massive particles than in the nonlinear optics case because of the different energy-momentum dispersion relations.
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