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Measurement of excitation coherence lengths using multi-spatial-mode four-wave mixing

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Abstract

We develop a multi-spatial-mode four-wave mixing (FWM) experiment to determine the coherence length of quasiparticles. We present evidence for nonlocal effects in a microcavity polariton system that affect nonlinear optical processes such as FWM.

© 2019 The Author(s)

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