Table 1 Syndrome measurement outcomes and their corresponding predicted single-qubit errors.

From: Logical error rate in the Pauli twirling approximation

measurement result

single-qubit error

0000

I

0001

Z 1

0010

X 3

0011

Z 0

0100

X 0

0101

X 2

0110

Z 4

0111

Y 0

1000

Z 2

1001

X 4

1010

X 1

1011

Y 1

1100

Z 3

1101

Y 2

1110

Y 3

1111

Y 4