adding separate Hx and Hz checks in Gottesman

src/ecc/codes/gottesmancode.jl

@@ -22,14 +22,14 @@ code_n(c::Gottesman) = 2^c.j
 function parity_checks(c::Gottesman)
     rows = c.j + 2
     cols = 2^c.j
-    
+
     Hx = falses(rows,cols)
     Hz = falses(rows,cols)
-    
+
     Hx[1, :] .= true
     Hx[2, :] .= false
 
-    if c.j == 3 
+    if c.j == 3
         for col in 1:cols
             Hx[3, col] = (col % 8 == 1 || col % 8 == 3 || col % 8 == 6) ? 0 : 1
         end
@@ -66,15 +66,15 @@ function parity_checks(c::Gottesman)
                 end
             end
         end
-    
+
         for a in 1:cols
             Hx[rows, a] = (a % 4 == 0) || (a % 4 == 1) ? 0 : 1
         end
     end
 
     Hz[1, :] .= false
     Hz[2, :] .= true
-    
+
     for i in 3:rows
         period = 2^(rows - i)
         for a in 1:cols
@@ -83,9 +83,13 @@ function parity_checks(c::Gottesman)
     end
     extended_Hx = Matrix{Bool}(Hz)
     extended_Hz = Matrix{Bool}(Hx)
-    
+
     num_rows = size(Hx, 1)
-   
+
     fill_array = fill(UInt8(0), num_rows)
     Stabilizer(fill_array, extended_Hz, extended_Hx)
-end
+end
+
+parity_checks_x(c::Gottesman) = c.Hx
+
+parity_checks_z(c::Gottesman) = c.Hz