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This study demonstrates that collective quantum emission effects persist in solid-state silicon-vacancy arrays despite severe inhomogeneous broadening, challenging previous assumptions about the impracticality of such systems. By utilizing high-density silicon ion implantation to create "superatoms" that probabilistically match frequencies, the research enables directional coherent emission in disordered environments. These findings provide a viable pathway for integrating quantum-emitter metasurfaces directly into nanophotonic circuits, expanding the design space for scalable quantum light sources.
Collective emission of subwavelengths atom-like emitter arrays in the presence of inhomogeneous broadening
arXiv:2606.07458v1 Announce Type: cross Abstract: Quantum metasurfaces comprised of subwavelength atomic arrays emerged as a promising platform for enhanced atom-photon interaction. However, realizing such a system with solid-state emitters has been considered impractical due to strong inhomogeneous broadening, which was expected to suppress the photon-mediated interactions that underpin collective emission. Here we report the observation of collective emission from subwavelength arrays of silicon-vacancy centres in diamond -- solid-state emitters whose inhomogeneous broadening exceeds the natural linewidth by two orders of magnitude -- demonstrating that collective effects such as resonance shifts, modified decay rates and directional coherent emission survive this disorder. A crucial enabling element is the implantation of a high density of silicon ions at each array site. This creates so-called superatoms, local ensembles that probabilistically achieve frequency matching across the array and enhance the collective response. We support our observations with a theoretical analysis explaining the mechanisms that preserve the collective effects even in the presence of inhomogeneity. These observations have direct implications for the realization of subwavelength arrays in any solid-state system, paving the way for quantum-emitter metasurfaces that are naturally integrated into nanophotonic environments.
Abstract:Quantum metasurfaces comprised of subwavelength atomic arrays emerged as a promising platform for enhanced atom-photon interaction. However, realizing such a system with solid-state emitters has been considered impractical due to strong inhomogeneous broadening, which was expected to suppress the photon-mediated interactions that underpin collective emission. Here we report the observation of collective emission from subwavelength arrays of silicon-vacancy centres in diamond -- solid-state emitters whose inhomogeneous broadening exceeds the natural linewidth by two orders of magnitude -- demonstrating that collective effects such as resonance shifts, modified decay rates and directional coherent emission survive this disorder. A crucial enabling element is the implantation of a high density of silicon ions at each array site. This creates so-called superatoms, local ensembles that probabilistically achieve frequency matching across the array and enhance the collective response. We support our observations with a theoretical analysis explaining the mechanisms that preserve the collective effects even in the presence of inhomogeneity. These observations have direct implications for the realization of subwavelength arrays in any solid-state system, paving the way for quantum-emitter metasurfaces that are naturally integrated into nanophotonic environments.
Optics (physics.optics); Atomic Physics (physics.atom-ph); Quantum Physics (quant-ph)
arXiv:2606.07458 [physics.optics]
(or arXiv:2606.07458v1 [physics.optics] for this version)
https://doi.org/10.48550/arXiv.2606.07458 Focus to learn more arXiv-issued DOI via DataCite (pending registration)
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