True or False: Quantum error correction encodes logical qubits into multiple physical qubits to protect against decoherence.
- True
- False
Answer: True
QEC (e.g., surface codes) detects/corrects errors without measuring quantum state directly. Essential for fault-tolerant quantum computing. Active research area; India's National Quantum Mission includes QEC R&D. [[DST Reports, NCERT Physics Class 12]]