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Updated: May 29, 2026

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
Published on: December 3, 2013
Correlations in amplified four-wave mixing of matter waves
Wu RuGway1, S S Hodgman, R G Dall
1ARC Centre of Excellence for Quantum-Atom Optics and Research School of Physics and Engineering, The Australian National University, Canberra, ACT, Australia.
Abstract:
The coherence properties of amplified matter waves generated by four-wave mixing (FWM) are studied using the Hanbury-Brown-Twiss method. We examine two limits. In the first case stimulated processes lead to the selective excitation of a pair of spatially separated modes, which we show to be second order coherent, while the second occurs when the FWM process is multimode, due to spontaneous scattering events which leads to incoherent matter waves. Amplified FWM is a promising candidate for fundamental tests of quantum mechanics where correlated modes with large occupations are required.
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