The QITE Photonics team at MPQ recently published an article in Optica Quantum.
- Lorenzo LAZZARI
- Jérémie SCHUHMANN
- Othmane MESKINE
- Martina MORASSI
- Aristide LEMAÎTRE
- Maria I. AMANTI
- Frédéric BOEUF
- Fabrice RAINERI
- Florent BABOUX
- Sara DUCCI
The QITE team at the MPQ Laboratory, in collaboration with STMicroelectronics, C2N, and INPHYNI, published a paper in Optica Quantum on the generation and engineering of two-photon states using III-V/SOI hybrid devices.
This study, featured on the cover of the February 25, 2026 issue, combines an AlGaAs photon-pair source with a silicon photonic platform, enabling room-temperature operation and full compatibility with standard semiconductor technologies.
Operating in the telecommunications C-band, the device delivers high photon-pair generation rates and excellent quantum signal quality. A new integrated coupling scheme allows the generated quantum state to be shaped and controlled directly on the chip.
This breakthrough is a key step towards the development of scalable, electrically driven quantum photonic systems for future applications in quantum communication and information processing.
Figure : Artist’s sketch of the hybrid device: photon pairs are generated in an AlGaAs waveguide. A coupling taper shapes and controls their wavefunction, then transfers them into the underlying silicon waveguide.