| ACOS-ISA™ | Automated Certification of Operational Standards — certification tiers (bronze → platinum) for quantum backends |
| Backend | A quantum computing resource (real hardware or simulator) that executes quantum circuits |
| Bell State | A maximally entangled two-qubit quantum state |
| BYOB | Bring Your Own Backend — connect custom quantum hardware to QCOS |
| Calibration | The process of characterizing quantum device parameters (T1, T2, gate errors, readout errors) |
| Circuit | A sequence of quantum gates and measurements encoded in QASM or other formats |
| Crosstalk | Unwanted interaction between qubits that degrades computation quality |
| DPO | Direct Preference Optimization — a training technique for LLMs |
| DRI | Device Readiness Inspection — assesses quantum device quality and readiness |
| Evidence Bundle | A cryptographically signed package containing job metadata, results, and integrity proof |
| FACE | Future Airborne Capability Environment — military avionics standard |
| Fidelity | A measure of how close a quantum operation result is to the ideal outcome (0.0–1.0) |
| Gate Error | The probability that a quantum gate produces an incorrect result |
| GlassBox™ | QCOS calibration transparency service — inspect device calibration data |
| HAL | Hardware Abstraction Layer — sensor interface for NavCore™ |
| Kalman Filter | A mathematical technique for state estimation from noisy measurements |
| LoRA | Low-Rank Adaptation — parameter-efficient fine-tuning technique |
| NavCore™ | Quantum-enhanced navigation platform with PQC, QRNG, and RAIM |
| NIS2 | EU Network and Information Security Directive v2 — cybersecurity compliance |
| OSNMA | Open Service Navigation Message Authentication — Galileo satellite authentication |
| PQC | Post-Quantum Cryptography — cryptographic algorithms resistant to quantum attacks |
| Proof-of-Quantum | A DRI test that proves a backend is a genuine quantum device (not a simulator) |
| QASM | Quantum Assembly Language — standard format for describing quantum circuits |
| QEC | Quantum Error Correction — techniques to protect quantum information from noise |
| QRNG | Quantum Random Number Generator — true randomness from quantum processes |
| QuantumLedger™ | Multi-tenant metering, governance, and chargeback system |
| QuantumNet™ | Multi-QPU quantum networking platform |
| Quantum Macro™ | Strategic analysis: market sizing, energy optimization, risk assessment |
| Quantum Volume | A benchmark metric measuring the effective computational power of a quantum device |
| RAIM | Receiver Autonomous Integrity Monitoring — satellite navigation integrity checking |
| Readout Error | The probability of measuring a qubit in the wrong state |
| ROI Engine™ | Cost analysis and provider comparison system |
| Shot | A single execution of a quantum circuit to obtain one measurement result |
| SOSA | Sensor Open Systems Architecture — military interoperability standard |
| Surface Code | A topological quantum error correction code |
| Syndrome | Error pattern measured during quantum error correction |
| T1 | Relaxation time — how long a qubit stays in the excited state (microseconds) |
| T2 | Dephasing time — how long a qubit maintains coherence (microseconds) |
| Teleportation | Quantum state transfer using entanglement and classical communication |
| VICTORY | Vehicular Integration for C4ISR/EW Interoperability — military standard |
| ZoneGuard™ | Qubit isolation system to prevent crosstalk between quantum operations |
| ZeRO | Zero Redundancy Optimizer — distributed training optimization (DeepSpeed) |