Destructive photon echo formation in six-wave mixing signals of a MoSe${}_2$ monolayer

Abstract

Monolayers of transition metal dichalcogenides display a strong excitonic optical response. Additionally encapsulating the monolayer with hexagonal boron nitride allows to reach the limit of a purely homogeneously broadened exciton system. On such a MoSe${}_2$-based system we perform ultrafast six-wave mixing spectroscopy and find a novel destructive photon echo effect. This process manifests as a characteristic depression of the nonlinear signal dynamics when scanning the delay between the applied laser pulses. By theoretically describing the process within a local field model we reach an excellent agreement with the experiment. We develop an effective Bloch vector representation and thereby demonstrate that the destructive photon echo stems from a destructive interference of successive repetitions of the heterodyning experiment.

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Cited by in corpus (4)

• Controlled Coherent Coupling in a Quantum Dot Molecule Revealed by Ultrafast Four-Wave Mixing Spectroscopy
• Coherent dynamics of a single Mn-doped quantum dot revealed by four-wave mixing spectroscopy
• Destructive photon echo formation in six-wave mixing signals of a MoSe${}_2$ monolayer
• Fundamentals of heterodyne wave mixing spectroscopy: a tutorial