Super-resolution Control of Two-dimensional Quantum Emitters

Bosai Lyu; Valeria Vento; Ludivine Fausten; Daniel Suarez-Forero; Klevis Domi; Kenji Watanabe; Takashi Taniguchi; Alberto Morpurgo; Iaroslav Gaponenko; Patrycja Paruch; Ajit Srivastava

arXiv · 2608.28574

Super-resolution Control of Two-dimensional Quantum Emitters

Bosai Lyu·Valeria Vento·Ludivine Fausten·Daniel Suarez-Forero·Klevis Domi·Kenji Watanabe·Takashi Taniguchi·Alberto Morpurgo·Iaroslav Gaponenko·Patrycja Paruch·Ajit Srivastava

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Abstract

Localized interlayer excitons in semiconducting transition-metal dichalcogenide heterobilayers are quantum emitters with a static electric dipole moment, making them excellent nanoscale charge sensors to probe correlated quantum phases in a proximal layer. These emitters are electrically tunable and inherit spin-valley selection rules, yet their deterministic spatial control remains challenging due to subwavelength confinement. Here, we present a platform that combines cryogenic optical spectroscopy with scanning probe microscopy to investigate trapped interlayer excitons in WSe$_2$/MoSe$_2$ bilayers. By exploiting AFM-based local Stark shift, we achieve super-resolution localization of emitters separated by only a few tens of nanometers and demonstrate deterministic control of individual charge states, including trion formation, opening a path towards coherent inter-dot coupling. Time-resolved measurements reveal tip-induced modification of the electromagnetic vacuum around individual emitters, thus controlling their radiative emission. Our multi-point charge sensing platform with optical readout is particularly well-suited to study fractionalization and anyon dynamics in semiconducting FCIs.

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Bosai Lyu, Valeria Vento, Ludivine Fausten, Daniel Suarez-Forero, Klevis Domi, Kenji Watanabe, Takashi Taniguchi, Alberto Morpurgo, Iaroslav Gaponenko, Patrycja Paruch, Ajit Srivastava. 2026-08-28. Super-resolution Control of Two-dimensional Quantum Emitters. https://arxiv.org/abs/2608.28574

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