Quandela
Overview
Photonic quantum computing based on near-perfect single-photon sources. Proprietary semiconductor quantum dot technology achieves >99% photon indistinguishability. MosaiQ modular photonic quantum computing platform.
Key Milestones
- 2017: Founded as CNRS/C2N spinout by CEO Niccolo Somaschi and Pascale Senellart
- 2022: MosaiQ photonic quantum computing platform launched
- 2023: €25M Series A raised
- 2024: >99% photon indistinguishability demonstrated
- 2025: OVHcloud collaboration for cloud-accessible photonic quantum computing
Technology Approach
Quandela builds photonic quantum computers powered by near-perfect single-photon sources — semiconductor quantum dots that emit photons with >99% indistinguishability. This is a critical metric: photonic quantum computing requires identical photons to interfere reliably, and Quandela’s sources are among the best in the world.
The MosaiQ platform is a modular photonic quantum computer designed for scalability. Unlike squeezed-light approaches (Xanadu) or fusion-based approaches (PsiQuantum), Quandela uses discrete single photons as qubits, with linear optical circuits for gates.
The OVHcloud collaboration makes Quandela’s photonic processors accessible via the cloud, positioning them as a European alternative to US-dominated quantum cloud platforms.
Competitive Position
Strengths: World-leading single-photon source quality (>99% indistinguishability), strong French academic roots (CNRS/C2N), room-temperature operation, European cloud partnerships.
Challenges: Photonic quantum computing faces universal challenges with non-deterministic gates and photon loss. Competing against much better-funded Xanadu and PsiQuantum. Small qubit counts compared to other modalities.