Tagged: error-correction
7 entries
- DecoherenceGlossary · Decoherence is the loss of a quantum system's coherent state through interaction with its environment, the reason quantum error correction is needed.
- Google Quantum AIQuantum computing · Google Quantum AI builds superconducting processors; its 2019 Sycamore supremacy claim was contested, and 2024 Willow showed below-threshold error correction.
- Logical qubitGlossary · A logical qubit is an error-corrected qubit encoded across many physical qubits, the unit in which cryptographically relevant quantum computers are sized.
- QuantinuumQuantum computing · Quantinuum formed in 2021 from Honeywell and Cambridge Quantum and builds trapped-ion H-series processors known for gate fidelity and quantum-volume records.
- Quantum computerFoundations · A quantum computer processes information with qubits and quantum effects; current machines remain far from breaking deployed public key cryptography.
- Quantum error correctionQuantum computing · Quantum error correction builds reliable logical qubits from many noisy physical qubits, using redundancy to suppress errors below a critical threshold.
- Surface codeGlossary · The surface code is the leading quantum error-correcting code, encoding one logical qubit in a two-dimensional grid of physical qubits.