Bad Qubits — Learn Quantum by Doing

Multiple choice

Below threshold, a surface code's logical error rate scales as P_L = A * (p/pth)^((d+1)/2). Take prefactor A = 0.1, physical error rate p = 0.001, threshold pth = 0.01, and distance d = 5. What is P_L?

1e-4
1e-5
1e-3
1e-2