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arXiv · 2507.08933

Anyon-trions in atomically thin semiconductor heterostructures

Nader Mostaan·Nathan Goldman·Ataç İmamoğlu·Fabian Grusdt
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Abstract

The study of anyons in topologically ordered quantum systems has mainly relied on edge-state interferometry. However, realizing controlled braiding of anyons necessitates the ability to detect and manipulate individual anyons within the bulk. Here, we propose and theoretically investigate a first step toward this goal by demonstrating that a long-lived, optically generated interlayer exciton can bind to a quasihole in a fractional quantum Hall state, forming a composite excitation we term an anyon-trion. Using exact diagonalization, we show that mobile anyon-trions possess a binding energy of approximately 0.5 meV, whereas static anyon-trions exhibit a binding energy of about 0.9 meV, that is linearly proportional to the quasiholes fractional charge. An experimental realization based on photoluminescence from localized interlayer excitons in a quantum twisting microscope setup should allow for a direct optical observation of anyon-trions.

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Nader Mostaan, Nathan Goldman, Ataç İmamoğlu, Fabian Grusdt. 2025-07-20. Anyon-trions in atomically thin semiconductor heterostructures. https://doi.org/10.1103/hxmb-pn4z

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