QC82 Unveils First Commercially Practical Architecture for Fault-Tolerant Photonic Qubit Generation 

[Maryland, 21 Nov 25] QC82 today announced the publication of a new photonic quantum architecture that offers a practical route to generating high-quality, low-error photonic qubits using experimentally feasible hardware. The work provides a realistic foundation for future fault-tolerant photonic quantum computing.

A major challenge in photonic quantum hardware has been producing the specialised quantum states of light that underpin quantum sensing, secure communication, and large-scale quantum computation. These Gottesman–Kitaev–Preskill (GKP) states are widely regarded as a key building block in continuous-variable architectures. However, generating them with the required success probabilities, error rates, and practical hardware constraints has remained difficult.

Many existing approaches rely on extreme optical conditions, large switching networks that add loss and noise, or single- and multi-photon resource states that are challenging to produce with the fidelities required for commercial systems. These limitations have kept practical GKP generation out of reach.

QC82’s new architecture is designed to address these constraints in a more hardware-feasible manner. The method combines teleportation-based squeezing with photon-number measurements, enabling the generation of low-noise GKP states without lossy switches or fragile single-photon resource states. By using squeezing as a tunable control parameter, the architecture removes the need for complex switching networks and remains compatible with existing photonic foundries and standard SNSPD or SPAD detector technologies.

Importantly, QC82’s simulations show a fault-tolerance threshold of 11.5 dB cluster squeezing. With state-of-the-art experiments already demonstrating around 15 dB of single mode squeezing, the requirement is within reach of current platforms.

“Creating high-quality GKP states has been one of the most persistent challenges in photonic quantum computing,” said Hussain Zaidi, CEO of QC82. “Our work shows that you do not need complex switching networks or probabilistic single-photon sources to achieve fault-tolerant performance. By relying on accessible squeezing and measurement-driven processes, we are demonstrating a path to scalable, manufacturable photonic quantum hardware and accelerating the timeline to an industrial quantum future.”

This work marks a defining step for photonic quantum technology. By overcoming the fundamental barrier to creating practical GKP states, QC82 has opened the path to a new class of non-Gaussian photonic hardware, the backbone for future quantum computing, quantum-secure communication, and high-precision sensing. The company is now advancing this architecture toward experimental demonstration and system-level deployment, helping to establish the photonic quantum infrastructure that will drive the next wave of technological capability. QC82 is now building the foundations of tomorrow’s quantum infrastructure.

Contact:
Hussain Zaidi, CEO & President
info@qc82.tech 

About QC82
QC82 is building the photonic infrastructure for the quantum-powered world. Its room-temperature photonic processors and ultra-efficient detection technology are engineered for seamless integration into today’s networks, devices, and data systems—eliminating the need for cryogenics and enabling true scalability. By turning light into reliable, high-fidelity information at unprecedented efficiency, QC82 provides a practical pathway to quantum-enhanced communications, sensing, and computation. Working with industry, government, and research partners, QC82 is laying the foundations of the future photonics layer that will power secure networks, smarter machines, and next-generation scientific discovery.