Table 1 Parameters \(\{a,b,x,z\}\) for different 2-element sets \(\Gamma\).

From: A mirrored pair of optimal non-decomposable entanglement witnesses for two qudits does exist

\(\Gamma \)

a

b

x

z

\(\ \{1,2\}\ \)

0

3

1

\(-2\)

\(\ \{1,3\}\ \)

0

3

1

\(1 - i \sqrt{3}\)

\(\ \{1,4\}\ \)

0

3

1

\(\ 1 + i \sqrt{3}\ \)

\(\ \{3,4\}\ \)

4

1

\(-1\)

2

\(\ \{2,4\}\ \)

4

1

\(-1\)

\(-1 + i \sqrt{3} \)

\(\ \{2,3\}\ \)

4

1

\(\ -1\ \)

\(\ -1 - i \sqrt{3} \ \ \)