Quantum Computing, Quantum Gravity, Holographic Universe, Quantum Error Correction, Quantum.
more qubits. In an improved & clever strategy, the information was encoded into 3 physical qubits. 2 ancilla qubits were used to compare the states & reveal the error ones. Note that the physical qubits were NOT measured in any of these approaches. (Image: https://bit.ly/3BIZGPM) Then came the