aid: psiquantum
name: PsiQuantum
description: >-
  PsiQuantum is a Palo Alto, California photonic quantum computing company
  founded in 2016 by Jeremy O'Brien, Terry Rudolph, Pete Shadbolt, and Mark
  Thompson, building utility-scale, fault-tolerant quantum computers based on
  single-photon qubits at telecom wavelength. Its Omega chipset — a silicon
  photonic system integrating on-chip single-photon sources, superconducting
  nanowire single-photon detectors, barium-titanate optical switches, and
  low-loss fiber couplers — is manufactured on 300mm wafers at GlobalFoundries'
  flagship fab in Malta, NY, leveraging mature semiconductor processes rather
  than exotic cryogenic fabrication. The company is constructing two utility-
  scale, million-qubit, fault-tolerant quantum computing sites: one at Moreton
  Bay, Queensland, Australia (in partnership with the Australian and
  Queensland governments) and one at the Illinois Quantum and Microelectronics
  Park in Chicago, Illinois (with additional R&D at PsiLabs in Daresbury, UK
  and assembly at PsiFactory in Milpitas, CA). PsiQuantum exposes a developer
  surface aimed at fault-tolerant quantum algorithm researchers: Construct, an
  enterprise platform for FTQC algorithm development, resource analysis, and
  training; Circuit Designer, a free web tool for prototyping and visualizing
  fault-tolerant quantum circuits; Circuit Hub, a shared library of `.circuit`
  files; and two open-source Python projects on GitHub — Bartiq, a symbolic
  quantum resource estimator that compiles subroutine-level costs to global
  T-gate, Toffoli, qubit, and circuit-volume estimates, and QREF, an open
  JSON-Schema-based format for representing quantum algorithms as hierarchical
  DAGs with a Pydantic validation library and a `qref-render` visualization
  tool. NVIDIA's CUDA-Q is integrated into Construct for accelerated
  simulation. PsiQuantum does not currently publish a commercial cloud-access
  REST API, OpenAPI specification, or a general-purpose quantum-execution SDK
  comparable to those of gate-model quantum cloud providers — its public
  developer artifacts are confined to FTQC resource-estimation tooling and
  algorithm-design surfaces — and there is no public pricing or self-serve
  tier for the underlying quantum hardware.
type: Index
position: Provider
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
  - Quantum Computing
  - Photonic Quantum Computing
  - Fault Tolerant Quantum Computing
  - FTQC
  - Single Photon Qubits
  - Silicon Photonics
  - Quantum Resource Estimation
  - Quantum Algorithms
  - Quantum Software
  - Omega Chipset
  - Construct
  - Circuit Designer
  - Bartiq
  - QREF
  - Semiconductor
  - Hardware
url: https://raw.githubusercontent.com/api-evangelist/psiquantum/refs/heads/main/apis.yml
created: '2026-05-24'
modified: '2026-05-24'
specificationVersion: '0.20'
apis: []
common:
  - type: DomainSecurity
    url: security/psiquantum-domain-security.yml
  - type: Website
    url: https://www.psiquantum.com
  - type: About
    url: https://www.psiquantum.com/about
  - type: Technology
    url: https://www.psiquantum.com/technology
  - type: Research
    url: https://www.psiquantum.com/research
  - type: Applications
    url: https://www.psiquantum.com/applications
  - type: Software
    url: https://www.psiquantum.com/psiquantum-software
  - type: CircuitDesigner
    url: https://circuits.psiquantum.com
  - type: Bartiq
    url: https://github.com/PsiQ/bartiq
  - type: BartiqDocs
    url: https://psiq.github.io/bartiq/
  - type: QREF
    url: https://github.com/PsiQ/qref
  - type: QREFDocs
    url: https://psiq.github.io/qref/
  - type: CircuitHub
    url: https://github.com/PsiQ/circuit-hub
  - type: GitHub
    url: https://github.com/PsiQ
  - type: News
    url: https://www.psiquantum.com/news
  - type: PressMaterials
    url: https://www.psiquantum.com/press-materials
  - type: Careers
    url: https://www.psiquantum.com/careers
  - type: Contact
    url: https://www.psiquantum.com/contact-us
  - type: LinkedIn
    url: https://www.linkedin.com/company/psiquantum
  - type: Twitter
    url: https://twitter.com/PsiQuantum
  - type: YouTube
    url: https://www.youtube.com/@psiquantum
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com