aiqbench analysis
This study presents a significant advancement in scalable photonic quantum technologies by integrating strain-engineered WSe$_2$ emitters with WS$_2$ waveguides on a van der Waals platform. The researchers demonstrate efficient, high-purity single-photon emission with strong coupling into multimode waveguides, establishing a viable pathway for on-chip quantum information processing. This work directly addresses the critical need for monolithic integration of sources, guides, and detectors essential for future quantum networks.
Integrated on-chip quantum light sources on a van der Waals platform
arXiv:2512.15337v2 Announce Type: replace-cross 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 discrete-state excitation, we observe high-purity, waveguide-coupled single-photon emission, measured using both single-port and cross-correlated, multi-port photon streams, yielding $g^{(2)}(0) = 0.003^{+0.030}_{-0.003}$ and $g^{(2)}(0) = 0.076\pm0.023$, respectively. For a single output, the out-coupled single-photon count rate at the first lens reaches approximately 357 kHz under continuous-wave discrete-state excitation, corresponding to an estimated minimum waveguide-coupled rate of 1.68 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.
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 discrete-state excitation, we observe high-purity, waveguide-coupled single-photon emission, measured using both single-port and cross-correlated, multi-port photon streams, yielding $g^{(2)}(0) = 0.003^{+0.030}_{-0.003}$ and $g^{(2)}(0) = 0.076\pm0.023$, respectively. For a single output, the out-coupled single-photon count rate at the first lens reaches approximately 357 kHz under continuous-wave discrete-state excitation, corresponding to an estimated minimum waveguide-coupled rate of 1.68 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.
Optics (physics.optics); Materials Science (cond-mat.mtrl-sci); Quantum Physics (quant-ph)
arXiv:2512.15337 [physics.optics]
(or arXiv:2512.15337v2 [physics.optics] for this version)
https://doi.org/10.48550/arXiv.2512.15337 Focus to learn more arXiv-issued DOI via DataCite
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