The researchers found that a “distance‑5 qubit array” com­pris­ing a total of 49 phys­i­cal qubits had an error rate of 2.914%, com­pared with 3.028% for a « distance‑3 array » com­pris­ing 17 qubits.
The researchers found that a “distance‑5 qubit array” com­pris­ing a total of 49 phys­i­cal qubits had an error rate of 2.914%, com­pared with 3.028% for a « distance‑3 array » com­pris­ing 17 qubits. This reduc­tion shows that increas­ing the num­ber of qubits is a viable route to “fault-tol­er­ant quan­tum com­put­ing” and that an error rate of bet­ter than one in a mil­lion could be pos­si­ble in a dis­tance-17 qubit array com­pris­ing 577 qubits.