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

Integrated on-chip quantum light sources on a van der Waals platform | Research Square Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Help Center Sign In Submit a Preprint Cite Share Download PDF Article Integrated on-chip quantum light sources on a van der Waals platform Battulga Munkhbat, Pietro Metuh, Pawel Wyborski, Athanasios Paralikis, and 3 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8748333/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted You are reading this latest preprint version 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 grating couplers, enabling efficient on-chip quantum light sources. The emitters exhibit bright, highly polarised emission that couples efficiently into WS 2 waveguides. Under 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±0.023). For a single output, the out-coupled single-photon count rate at the first lens reaches approximately 299 kHz under continuous-wave p-shell excitation, corresponding to an estimated waveguide-coupled rate of 1.59 MHz. These results demonstrate an efficient, integrated single-photon source and establish a pathway toward scalable photonic quantum information processing centred around nanoengineered van der Waals materials. Physical sciences/Nanoscience and technology/Nanoscale devices/Nanophotonics and plasmonics Physical sciences/Physics/Quantum physics/Single photons and quantum effects Physical sciences/Optics and photonics/Optical physics/Quantum optics Physical sciences/Materials science/Nanoscale materials/Two-dimensional materials Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupplementaryMaterials.pdf Supplementary Material Cite Share Download PDF Status: Under Review Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information

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