Quantum Computing, Fault Tolerance, Error Correction, Logical Qubits.
number was 57 total physical qubits with 25 data qubits. 49 “The depicted logical qubit is built out of 49 physical qubits on a 5 × 5 square grid (representing 25 data qubits on the vertices and 24 ancilla qubits on the faces) and is tolerant to up to two general errors; a larger number of qubits