Photonic quantum computers
Qubits carried by light, built on semiconductor fabs (PsiQuantum, Xanadu); Photonic Inc. pairs silicon spin qubits with optical links
3 leading companies in photonic quantum computers, one segment of quantum computing — Machines that compute with qubits, rented over the cloud or sold on-premises — US$1.4B in 2025, ~30%/yr growth forecast
new market segment · researched 2026-11-14
Superconducting quantum computersTrapped-ion quantum computersPhotonic quantum computersNeutral-atom quantum computersQuantum cloud access & software
C
Leading photonic quantum computers companies
3 companies, with the scale each source states. Scale is the whole company's unless the row says otherwise.
| Company | Where | What they do | Scale |
|---|---|---|---|
| PsiQuantum ↗ | Palo Alto, United States since 2016 | Fault-tolerant photonic quantum computers made in silicon-photonics fabs; first systems planned in Australia (A$940M Commonwealth/Queensland package) and at the Illinois Quantum and Microelectronics Park; raised a $1B Series E | employees: 500 employees (500+) (2026) ↗ |
| Xanadu Quantum Technologies XNDU (TSX, Nasdaq) ↗ | Toronto, Canada since 2016 | Photonic quantum computers accessed over the cloud, plus open-source software for quantum machine learning and photonic simulation; Canadian Quantum Champion (up to C$23M); C$893M facility and manufacturing expansion | — |
| Photonic Inc. ↗ | Canada | Distributed quantum computing with silicon spin qubits and optical photonic interconnects ('Entanglement First' architecture); works with Microsoft; Canadian Quantum Champion (up to C$23M) | — |
CA
In Canada
- 2025-12Phase 1 of the Canadian Quantum Champions Program commits up to C$92M, up to C$23M each for Anyon Systems, Nord Quantique, Photonic and Xanadu. The money comes from C$334.3M over five years in Budget 2025, and the NRC's Benchmarking Quantum Platform will assess each company's progress. ↗
M
The quantum computing market
The whole market this segment sits in.
global revenue · world1.4
↗USD billions · 2025
Growth, segments, risks and every company in quantum computing →
Quick answers
- What are photonic quantum computers?
- Qubits carried by light, built on semiconductor fabs (PsiQuantum, Xanadu); Photonic Inc. pairs silicon spin qubits with optical links. They are one segment of the quantum computing market.
- Who are the leading photonic quantum computers companies?
- PsiQuantum (United States), Xanadu Quantum Technologies (Canada), Photonic Inc. (Canada).
- Which photonic quantum computers companies are publicly traded?
- Xanadu Quantum Technologies (XNDU (TSX, Nasdaq)).
- Which Canadian companies are in photonic quantum computers?
- Xanadu Quantum Technologies, Toronto; Photonic Inc..
- How big is the quantum computing market?
- For the whole quantum computing market, not this segment alone: global revenue (world) 1.4 USD billions, 2025 — Quantum Economic Development Consortium (QED-C) / SRI International.