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International Conference on Ultrafast Phenomena

Multi-Quantum Optical Two-dimensional Coherent Spectroscopy of Many-Body Quantum Coherence

Hebin Li

Published Jan 1, 2022• 0 citations
Publisher

Abstract

We have implemented multi-quantum (up to eight-quantum) optical two-dimensional coherent spectroscopy in a collinear setup based on acousto-optic phase modulators. The technique has been demonstrated to detect multi-quantum coherence of up to eight atoms.
DOI
10.1364/up.2022.th3a.6

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Multi-dimensional coherent spectroscopy (MDCS) has become an extremely versatile and sensitive technique for elucidating the structure, composition, and dynamics of condensed matter, atomic, and molecular systems. The appeal of MDCS lies in its ability to resolve both individual-emitter and ensemble-averaged dynamics of optically created excitations in disordered systems. When applied to semiconductors, MDCS enables unambiguous separation of homogeneous and inhomogeneous contributions to the optical linewidth, pinpoints the nature of coupling between resonances, and reveals signatures of many-body interactions. In this review, we discuss the implementation of MDCS to measure the nonlinear optical response of excitonic transitions in semiconductor nanostructures. Capabilities of the technique are illustrated with recent experimental studies that advance our understanding of optical decoherence and dissipation, energy transfer, and many-body phenomena in quantum dots and quantum wells, semiconductor microcavities, layered semiconductors, and photovoltaic materials.
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