QLT Photonic Processor
A 5×5 mm silicon nitride quantum photonic integrated circuit designed around one architectural thesis: analog coherence should be managed inside the chip, not left as a downstream system problem.
What sits on a single die
| Component | Technology | Key Metric |
|---|---|---|
| Waveguide Core | Si₃N₄, 400 nm thick | 0.1 dB/m propagation loss |
| ODR Modules | Proprietary hybrid spirals | Analog phase-error reversal |
| Optical Switches | Proprietary all-optical transistor | <175 fs switching, >30 dB extinction |
| Logic Gates | Reconfigurable MZI mesh | 28 cells, 99.98% single-qubit fidelity |
| Photon Sources | Heralded SFWM in SiN micro-rings | 8 multiplexed sources |
| Die Size | Silicon nitride PIC on SOI | 5 × 5 mm, 200/300 mm wafer class |
Four functional layers on one chip
Quantum Operations
Integrated photonic routing and interferometric structures for dual-rail and time-bin qubit processing through a programmable MZI mesh.
Error Reversal
Proprietary on-chip distortion management that passively extends qubit coherence time by an order of magnitude — eliminating the need for cryogenic isolation or external error-correction hardware.
Routing & Switching
Proprietary femtosecond all-optical switches for photon source multiplexing, path selection, delay-loop reuse, and adaptive circuit reconfiguration.
Industrial Path
Advanced packaging with fiber-attach, thermal management, metrology, and qualification converting laboratory die into deployable product hardware.
One chip, two product configurations
The same physical chip supports both classical AI acceleration (with laser inputs) and full quantum computing (with single-photon inputs). ODR stabilizes both operating modes — solving photonic neural network accuracy collapse and extending quantum circuit depth.
Photonic AI Accelerator
Classical laser inputs drive matrix-vector multiplication at the speed of light. ODR maintains accuracy across arbitrarily deep optical neural networks. Near-term revenue path targeting $50B+ TAM.
Quantum Processor
Single-photon inputs for universal quantum computation. Proprietary all-optical switches enable real-time feed-forward for measurement-based quantum computing. Defense-first deployment: field-deployable, no cryogenics.
Understand the technology behind the product
The technology page explains how ODR, the materials stack, and the control layer work together to create the QLT Photonic Processor's coherence-first architecture.