Qubit ZooIntroduces noiseless quantum codes, the early decoherence-free-subspace picture in which symmetry of the system-environment coupling creates a subspace immune to specific noise operators.
Key Results
- Proposes passive error protection via symmetry-protected subspaces rather than active correction
- Identifies decoherence-free subspaces as eigenspaces where the environment cannot distinguish logical states
- Establishes the algebraic foundation later used for DFS encodings and noiseless subsystems
Links
- Journal: Physical Review Letters