Quantum Computing, Fault Tolerance, Error Correction, Logical Qubits.
from 0 to 1. Flip a qubit. Same as 2, but in an unknown state, not 0 per se. Hadamard gate. To see superposition. Reverse a Hadamard gate. H gate to create superposition, second H gate to restore to original state before superposition. Bell state. To entangle two logical qubits. Measurement. After