Related papers: Integrated on-chip quantum light sources on a van der Waals platform

Integrated on-chip quantum light sources on a van der Waals platform

URL: http://arxiv.org/abs/2512.15337v1
Date: Wed, 17 Dec 2025 11:32:59 GMT
Title: Integrated on-chip quantum light sources on a van der Waals platform
Authors: Pietro Metuh, Paweł Wyborski, Athanasios Paralikis, Frederik Schröder, Nicolas Stenger, Niels Gregersen, Battulga Munkhbat,
Abstract summary: We introduce a van der Waals platform comprising strain-engineered bilayer WSe$$ quantum emitters, integrated on multimode WS$$ waveguides with optimized grating couplers.<n>We observe high-purity, waveguide-coupled single-photon emission, measured using both an off-chip Hanbury Brown-Twiss configuration and an on-chip configuration.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Scalable photonic quantum information technologies require a platform combining quantum light sources, waveguides, and detectors on a single chip. Here, we introduce a van der Waals platform comprising strain-engineered bilayer WSe$_2$ quantum emitters, integrated on multimode WS$_2$ waveguides with optimized grating couplers, enabling efficient on-chip quantum light sources. The emitters exhibit bright, highly polarized emission that couples efficiently into WS$_2$ waveguides. Under resonant p-shell excitation, we observe high-purity, waveguide-coupled single-photon emission, measured using both an off-chip Hanbury Brown-Twiss configuration ($g^{(2)}(0) = 0.003^{+0.030}_{-0.003}$) and an on-chip configuration ($g^{(2)}(0) = 0.076\pm0.023$). For a single output, the out-coupled single-photon count rate at the first lens reaches approximately 320 kHz under continuous-wave p-shell excitation, corresponding to an estimated waveguide-coupled rate of 1.7 MHz. These results demonstrate an efficient, integrated single-photon source and establish a pathway toward scalable photonic quantum information processing centered around nanoengineered van der Waals materials.

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