aid: quantinuum name: Quantinuum description: >- Quantinuum is an integrated quantum computing company formed by the 2021 merger of Honeywell Quantum Solutions and Cambridge Quantum. It builds trapped-ion (QCCD) quantum computers — the H1, H2, and Helios System Models — and develops the full software stack that runs on them: the Nexus cloud platform, the TKET quantum compiler, the InQuanto computational chemistry package, the lambeq quantum natural language processing toolkit, the Guppy quantum programming language, the Selene emulation framework, and the Quantum Origin verifiable randomness service. Programmatic access to Quantinuum systems is delivered through the Nexus platform (Python client `qnexus` plus a REST/OpenAPI surface) and via partner clouds; circuits are described in OpenQASM 2.0 and the Quantum Intermediate Representation (QIR). type: Index position: Producing access: 3rd-Party image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg tags: - Quantum Computing - Trapped Ion - Quantum Hardware - Quantum Software - Quantum Compiler - Quantum Chemistry - Quantum Natural Language Processing - Quantum Random Number Generator - QIR - OpenQASM - Cloud Platform url: >- https://raw.githubusercontent.com/api-evangelist/quantinuum/refs/heads/main/apis.yml created: '2026-05-24' modified: '2026-05-24' specificationVersion: '0.20' apis: - aid: quantinuum:nexus name: Quantinuum Nexus description: >- Nexus is Quantinuum's all-in-one quantum computing cloud platform. It brokers access to Quantinuum H-Series hardware (H1, H2, Helios) and to partner backends including IBM Quantum and Amazon Braket, manages projects, teams, roles, quotas, credentials, and linked accounts, and orchestrates job submission, compilation, results retrieval, and circuit visualization. Nexus exposes a Python client (`qnexus`, Apache 2.0) and a REST/OpenAPI surface ("Nexus OpenAPI") covered by the platform's Authentication & Quotas documentation. Jobs are submitted as OpenQASM 2.0 or QIR programs and may be compiled and executed against Quantinuum systems or partner backends. humanURL: https://docs.quantinuum.com/nexus/ tags: - Quantum Computing - Cloud Platform - Job Submission - Compilation - Projects - Teams - Quotas properties: - type: Documentation url: https://docs.quantinuum.com/nexus/ - type: Documentation url: https://docs.quantinuum.com/nexus/trainings/getting_started.html - type: SignUp url: https://nexus.quantinuum.com/auth/login - type: SDK url: https://github.com/Quantinuum/qnexus - type: SDK url: https://pypi.org/project/qnexus/ - aid: quantinuum:systems name: Quantinuum Systems (H-Series) description: >- The Quantinuum Systems API exposes the H-Series trapped-ion (QCCD) quantum computers — System Model H1, System Model H2, and the next-generation Helios — for circuit submission. Direct communication with system endpoints occurs via QIR (Quantum Intermediate Representation) or OpenQASM 2.0 payloads, typically brokered through Nexus. The H-Series supports all-to-all qubit connectivity, mid-circuit measurement and reset, parameterized two-qubit operations, and conditional logic. humanURL: https://docs.quantinuum.com/systems/ tags: - Quantum Computing - Trapped Ion - QIR - OpenQASM - H-Series properties: - type: Documentation url: https://docs.quantinuum.com/systems/ - type: Documentation url: https://docs.quantinuum.com/systems/user_guide/hardware_user_guide/access.html - type: Data url: https://github.com/Quantinuum/quantinuum-hardware-specifications - type: Data url: https://github.com/Quantinuum/quantinuum-hardware-quantum-volume - type: Data url: https://github.com/Quantinuum/quantinuum-hardware-h2-benchmark - aid: quantinuum:tket name: TKET description: >- TKET is Quantinuum's optimizing quantum compiler. The Python interface `pytket` and the C++ core `tket` provide gate-level circuit construction, hardware-agnostic optimization passes, routing, and backend extensions for Quantinuum H-Series, IBM Q (Qiskit), Amazon Braket, IQM, AQT, PennyLane, and others. TKET2 (Rust) is the next-generation compiler built on the HUGR intermediate representation. humanURL: https://docs.quantinuum.com/tket/ tags: - Quantum Compiler - Circuit Optimization - Python SDK - HUGR properties: - type: Documentation url: https://docs.quantinuum.com/tket/user-guide/ - type: SDK url: https://github.com/Quantinuum/tket - type: SDK url: https://github.com/Quantinuum/tket2 - type: SDK url: https://github.com/Quantinuum/pytket-quantinuum - type: SDK url: https://pypi.org/project/pytket/ - type: CodeExamples url: https://github.com/Quantinuum/pytket-docs - aid: quantinuum:inquanto name: InQuanto description: >- InQuanto is Quantinuum's computational quantum chemistry platform for molecular and materials simulations on near-term and fault-tolerant quantum computers. It implements VQE, quantum phase estimation, and advanced ansätze/error-mitigation, with integrations to PySCF and other classical chemistry tooling. Licensed to enterprise users and accessed via Python; runs against Quantinuum Systems and emulators through Nexus. humanURL: https://docs.quantinuum.com/inquanto/ tags: - Quantum Chemistry - Molecular Simulation - VQE - QPE properties: - type: Documentation url: https://docs.quantinuum.com/inquanto/manual/howto.html - type: Portal url: https://www.quantinuum.com/products-solutions/inquanto - aid: quantinuum:lambeq name: lambeq description: >- lambeq is Quantinuum's open-source Python toolkit for Quantum Natural Language Processing (QNLP). It converts sentences into string diagrams (DisCoCat / DisCoCirc), rewrites them into parameterized quantum circuits, and trains them on classical simulators or Quantinuum hardware. Released under Apache 2.0. humanURL: https://docs.quantinuum.com/lambeq/ tags: - Quantum NLP - QNLP - DisCoCat - Python SDK properties: - type: Documentation url: https://docs.quantinuum.com/lambeq/intro.html - type: SDK url: https://github.com/CQCL/lambeq - type: SDK url: https://github.com/Quantinuum/lambeq - type: SDK url: https://pypi.org/project/lambeq/ - aid: quantinuum:guppy name: Guppy description: >- Guppy (`guppylang`) is Quantinuum's Pythonic quantum-classical programming language. Guppy programs compile through the HUGR hierarchical intermediate representation and target Quantinuum hardware, Selene emulators, and QIR-compatible backends. Designed for hybrid classical-quantum control flow including conditional logic, loops, and mid-circuit measurement. humanURL: https://docs.quantinuum.com/guppy/ tags: - Quantum Programming Language - Hybrid Computation - HUGR - Python properties: - type: Documentation url: https://docs.quantinuum.com/guppy/getting_started.html - type: SDK url: https://github.com/Quantinuum/guppylang - type: SDK url: https://github.com/Quantinuum/hugr - aid: quantinuum:selene name: Selene description: >- Selene is Quantinuum's plugin-extensible emulator for hybrid quantum computation. It simulates the behavior of Quantinuum H-Series hardware including mid-circuit measurement, conditional control flow, and QIR-defined programs, with pluggable noise models and runtime backends. humanURL: https://docs.quantinuum.com/selene/ tags: - Emulator - Simulation - Hybrid Computation - QIR properties: - type: Documentation url: https://docs.quantinuum.com/selene/user_guide/overview.html - type: SDK url: https://github.com/Quantinuum/selene - aid: quantinuum:quantum-origin name: Quantum Origin description: >- Quantum Origin is Quantinuum's verifiable quantum random number generation service, delivering cryptographically strong entropy seeded by quantum measurements for use in PKI, key generation, and other security workloads. Available as a hosted cloud API and on-prem appliance. humanURL: https://docs.quantinuum.com/origin/ tags: - Quantum Random Number Generator - QRNG - Cryptography - Security properties: - type: Documentation url: https://docs.quantinuum.com/origin/user_guides/introduction/summary.html - type: Portal url: https://www.quantinuum.com/products-solutions/quantum-origin - aid: quantinuum:qermit name: Qermit description: >- Qermit is a Python module for running error-mitigation protocols (probabilistic error cancellation, zero-noise extrapolation, Clifford data regression, dynamical decoupling, etc.) on top of the pytket quantum SDK and Quantinuum/partner backends. humanURL: https://github.com/Quantinuum/Qermit tags: - Error Mitigation - Python SDK - pytket properties: - type: SDK url: https://github.com/Quantinuum/Qermit - type: SDK url: https://pypi.org/project/qermit/ common: - type: Portal url: https://www.quantinuum.com/ - type: Documentation url: https://docs.quantinuum.com/ - type: GitHubOrganization url: https://github.com/Quantinuum - type: LinkedIn url: https://www.linkedin.com/company/quantinuum - type: SignUp url: https://nexus.quantinuum.com/auth/login - type: Portal name: Nexus Portal url: https://nexus.quantinuum.com/ - type: GettingStarted url: https://docs.quantinuum.com/nexus/trainings/getting_started.html - type: Support name: Quantinuum Customer Support url: mailto:qcsupport@quantinuum.com - type: Blog url: https://www.quantinuum.com/news - type: Publications url: https://github.com/Quantinuum/quantinuum-publications - type: SDK name: pytket (Python) url: https://github.com/Quantinuum/tket - type: SDK name: pytket-quantinuum url: https://github.com/Quantinuum/pytket-quantinuum - type: SDK name: pytket-qiskit url: https://github.com/Quantinuum/pytket-qiskit - type: SDK name: pytket-braket url: https://github.com/Quantinuum/pytket-braket - type: SDK name: pytket-cutensornet url: https://github.com/Quantinuum/pytket-cutensornet - type: SDK name: pytket-qir url: https://github.com/Quantinuum/pytket-qir - type: SDK name: qnexus (Python) url: https://github.com/Quantinuum/qnexus - type: SDK name: Guppy url: https://github.com/Quantinuum/guppylang - type: SDK name: HUGR url: https://github.com/Quantinuum/hugr - type: SDK name: lambeq url: https://github.com/CQCL/lambeq - type: SDK name: Qermit url: https://github.com/Quantinuum/Qermit - type: SDK name: Selene url: https://github.com/Quantinuum/selene - type: Tool name: Tierkreis Hybrid Workflow Manager url: https://github.com/Quantinuum/tierkreis - type: Tool name: cryptomite url: https://github.com/Quantinuum/cryptomite - type: Data name: Hardware Specifications url: https://github.com/Quantinuum/quantinuum-hardware-specifications - type: Data name: Quantum Volume Data url: https://github.com/Quantinuum/quantinuum-hardware-quantum-volume - type: Documentation name: PHIR Specification url: https://github.com/Quantinuum/phir - type: Integration name: Microsoft Azure Quantum url: https://learn.microsoft.com/azure/quantum/provider-quantinuum - type: Integration name: Quantinuum on NVIDIA CUDA-Q url: https://nvidia.github.io/cuda-quantum/latest/using/backends/hardware.html - type: Features data: - H-Series QCCD trapped-ion quantum computers (System Model H1, H2, Helios) - All-to-all qubit connectivity with high two-qubit gate fidelity - Mid-circuit measurement, reset, and conditional control flow - Nexus cloud platform with project, team, role, quota, and credential management - REST/OpenAPI surface ("Nexus OpenAPI") and `qnexus` Python client - Backend brokerage to IBM Quantum, Amazon Braket, and other partner systems - TKET / pytket optimizing compiler with extensive backend extensions - TKET2 next-generation compiler built on HUGR - Guppy Pythonic quantum-classical programming language - InQuanto enterprise quantum chemistry package (VQE, QPE, advanced ansätze) - lambeq QNLP toolkit (DisCoCat / DisCoCirc to quantum circuits) - Qermit error-mitigation protocols (PEC, ZNE, CDR, dynamical decoupling) - Selene plugin-extensible emulator for hybrid programs - Quantum Origin verifiable QRNG cloud API and on-prem appliance - QIR and OpenQASM 2.0 program submission formats - PHIR (PECOS High-level Intermediate Representation) data model - Tierkreis hybrid workflow manager - Public hardware specifications and Quantum Volume datasets on GitHub - Available via Microsoft Azure Quantum and NVIDIA CUDA-Q integrations - Apache 2.0 open-source licensing for pytket, qnexus, lambeq, Guppy, Selene, Qermit sources: - https://www.quantinuum.com/ - https://docs.quantinuum.com/ - https://docs.quantinuum.com/nexus/trainings/getting_started.html - https://github.com/Quantinuum updated: '2026-05-24' maintainers: - FN: Kin Lane email: info@apievangelist.com X: apievangelist url: https://apievangelist.com