Catenaa, Tuesday, November 25, 2025- Researchers in China unveiled a quantum photonic chip that links light-emitting molecules with single-mode waveguides, marking a step toward devices that can run multiple indistinguishable single-photon sources on one platform.

The team created two independent emitters on an organic nanosheet and showed that both produced photons with matching features needed for quantum interference experiments.

The group from Huazhong University of Science and Technology, the Wuhan Institute of Quantum Technology and Zhejiang University built the chip on a hybrid platform that connects organic nanosheets, silicon-nitride circuits and metal electrodes.

The molecules were positioned so their emissions entered the guided circuit with high efficiency.

The researchers then tuned each emitter with electric fields to match their output frequencies.

The photons were sent through separate waveguides to an on-chip beam splitter. The team recorded Hong-Ou-Mandel interference, a benchmark that confirms the photons overlapped as identical particles.

Measurements of correlations at the beam splitter outputs showed clear interference, indicating that the two emitters acted as a synchronized pair.

The work outlines a method for assembling many similar emitters on a single device while preserving the quality needed for quantum logic and communication.

The researchers said the approach could support larger arrays of sources and more complex routing structures. They plan to expand the platform with microcavities and slow-light components to improve coupling and boost output.

The study suggests a template for next-generation optical chips that could distribute identical photons across circuits for computing tasks.