An operating system for quantum computers
One runtime to run, govern and record your quantum jobs.
QCOS is the runtime layer between quantum backends and your application. Run CPU state-vector simulations (≤ 24 qubits) through QCOS, bring your own provider credentials for trapped-ion, superconducting or neutral-atom backends, and get a SHA-256 Merkle-sealed evidence bundle for every run. Proprietary architecture; invention disclosure in process.
CPU simulator
≤ 24q
Trapped-ion (BYO)
—
Superconducting (BYO)
—
Neutral-atom (BYO)
—
One runtime for the backends you connect
Like Linux abstracts CPUs from different vendors, QCOS abstracts quantum backends behind one API. Run on the CPU state-vector simulator (≤ 24 qubits) through QCOS, or bring your own provider credentials for other backends.
Deployment Environments
Execution paths (via HAL drivers)
CPU simulator
State-vector
≤ 24 qubits
Trapped-ion
Provider backend
BYO credentials
Superconducting
Provider backend
BYO credentials
Neutral-atom
Provider backend
BYO credentials
Unified Runtime
One API for the backends you connect
Hardware Abstraction
One interface across the backends you connect
Portable Workloads
Like containers for quantum
Organizations that require operational control
Quantum hardware vendors
Differentiate with enterprise-ready governance. Offer customers audit trails and cost controls.
National labs & HPC centers
Integrate quantum into existing HPC governance. Unified policies, reproducible results, and sovereign deployment options.
Regulated enterprise R&D
Pharma, defense, energy, and finance. Sealed evidence bundles and audit logs (90-day retention) to support your own regulatory reviews.
Sovereign infrastructures
Governments and critical infrastructure. Air-gapped deployment on request and offline licence validation with QuantumLock.
Built on proven principles of quantum computing science
QCOS implements rigorous computational and physical frameworks that enable reproducible, verifiable quantum operations at scale.
Sealed Evidence Bundles
SHA-256 Merkle seal, verified offline
Formal Capability Contracts
Verified backend specifications
Variational Optimization
Autopilot closed-loop VQE/QAOA
State Tomography
Fidelity & entanglement metrics
Error Mitigation
ZNE, PEC, Dynamical Decoupling
Standards-Based
Cross et al., Phys. Rev. A 100 (2019)
Post-Quantum Ready
ML-DSA signs QuantumLock licence tokens via liboqs. ML-KEM is key generation only.
Six subsystems that make QCOS a true operating system
Like a traditional OS has process scheduler, memory manager, and device drivers, QCOS provides the fundamental abstractions for quantum computing.
Autopilot — Closed-Loop Optimisation
Proprietary architecture; invention disclosure in process
A closed-loop optimiser that tunes circuit parameters against measured fidelity. No benchmark figure is published for it today: its earlier GHZ-6 result was withdrawn in August 2026.
Decision Reliability Rating
Know before you execute
Before running a circuit, QCOS scores the reliability of the expected result. A proprietary multi-dimensional analysis estimates how reliable your result is likely to be before you spend a shot. Returns a 0–100 score and a GREEN / YELLOW / RED semaphore.
Quantum Runtime
Unified execution environment
The core execution layer that manages quantum job lifecycle — from circuit submission to result retrieval. Handles queuing, scheduling, and resource allocation across all connected backends.
Hardware Abstraction Layer
Vendor-neutral drivers
Like device drivers in a traditional OS, the HAL provides a unified interface to quantum backends. The CPU state-vector simulator (≤ 24 qubits) is available through QCOS; trapped-ion, superconducting and neutral-atom providers connect with your own provider credentials.
Job Control
You choose the backend
You name the backend for every job; QCOS does not pick one for you yet. A dry run returns the estimated cost first. Before a job runs, QCOS checks it against your plan limits and credit balance, and holds hardware runs and higher-cost jobs until you confirm the cost. Jobs are scoped to your workspace.
Policy Engine
Governance-as-code
Define and enforce policies at the OS level. Budget limits, approval workflows, and access controls — checked before every execution.
Evidence Ledger
Sealed audit trail
Every execution produces a sealed evidence bundle — circuit hash, timestamps, backend metadata, results, costs. Bundles are sealed under a SHA-256 Merkle root and can be verified offline with softquantus-verify.
Deployment Modes
Cloud, with hybrid and air-gapped on request
QCOS runs as a managed SaaS on Azure Container Apps (West Europe). Hybrid / VPC and air-gapped installations with locally verified licence tokens are available on request.
What QCOS is — and what it's not
QCOS is not a wrapper around a single provider. It is the runtime layer your quantum jobs go through.
QCOS is
- Quantum operating system — unified runtime across the backends you connect
- Hardware abstraction layer — vendor-neutral drivers for the backends you connect
- Quantum kernel — scheduler, policies, resource management
- Evidence system — execution records sealed under a SHA-256 Merkle root
- Portable — cloud, with hybrid and air-gapped on request
QCOS is not
- A promise of quantum advantage — that depends on your algorithm
- A compiler or SDK replacement — use Qiskit, Cirq, PennyLane
- A proprietary runtime — we integrate, not replace
- A "magic optimizer" — gains are from control, not physics tricks
- Hardware-specific — provider-neutral by design
OS architecture for quantum
Applications → QCOS (Runtime · Scheduler · Kernel) → Quantum Hardware
User Space
Qiskit · Cirq · PennyLane · Custom Workflows
Kernel Space
QCOS
Hardware Abstraction Layer
Execution Backends
Cloud · Hybrid and air-gapped on request
Evidence Bundle
Sealed under a SHA-256 Merkle root
Audit Log
Tamper-evident trail
Cost Ledger
Chargeback/showback ready
Cloud today; hybrid and air-gapped on request
Cloud (SaaS)
Managed by SoftQuantus on Azure Container Apps (West Europe). Fast deployment and automatic updates.
Hybrid / VPC
Your infrastructure, our control plane. Contact us to discuss deployment options.
Air-Gapped / Sovereign
Offline operation with QuantumLock licence tokens, available on request.
Quantum Error Correction built into the OS
QEC middleware with generalized bicycle QLDPC codes, BP+OSD decoding, PBC compilation, and fault-tolerant isolation checks, validated on the QCOS CPU state-vector simulator.
Explore QEC StackReady to deploy the OS for quantum?
QCOS is an operating system for quantum workloads. One runtime for the backends you connect: managed SaaS today, hybrid or air-gapped on request.
What happens next:
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