diff --git a/src/Simulation/qdk_sim_rs/src/common_matrices.rs b/src/Simulation/qdk_sim_rs/src/common_matrices.rs
index 4247b1d6234..60d562ee0bc 100644
--- a/src/Simulation/qdk_sim_rs/src/common_matrices.rs
+++ b/src/Simulation/qdk_sim_rs/src/common_matrices.rs
@@ -24,7 +24,7 @@ pub fn x() -> Array2<C64> {
 
 /// Returns a unitary matrix representing the `Y` operation.
 pub fn y() -> Array2<C64> {
-    array![[ZERO_C, I_C], [-I_C, ZERO_C]]
+    array![[ZERO_C, -I_C], [I_C, ZERO_C]]
 }
 
 /// Returns a unitary matrix representing the `Z` operation.
diff --git a/src/Simulation/qdk_sim_rs/tests/data/ideal-noise-model.json b/src/Simulation/qdk_sim_rs/tests/data/ideal-noise-model.json
index 33c2d3089bb..19778ad8793 100644
--- a/src/Simulation/qdk_sim_rs/tests/data/ideal-noise-model.json
+++ b/src/Simulation/qdk_sim_rs/tests/data/ideal-noise-model.json
@@ -1 +1 @@
-{"initial_state":{"n_qubits":1,"data":{"Mixed":{"v":1,"dim":[2,2],"data":[[1,0],[0,0],[0,0],[0,0]]}}},"cnot":{"n_qubits":2,"data":{"Unitary":{"v":1,"dim":[4,4],"data":[[1,0],[0,0],[0,0],[0,0],[0,0],[1,0],[0,0],[0,0],[0,0],[0,0],[0,0],[1,0],[0,0],[0,0],[1,0],[0,0]]}}},"i":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[1,0],[0,0],[0,0],[1,0]]}}},"s":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[1,0],[0,0],[0,0],[0,1]]}}},"s_adj":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[1,-0],[0,-0],[0,-0],[0,-1]]}}},"t":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[1,0],[0,0],[0,0],[0.7071067811865476,0.7071067811865476]]}}},"t_adj":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[1,-0],[0,-0],[0,-0],[0.7071067811865476,-0.7071067811865476]]}}},"h":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[0.7071067811865476,0],[0.7071067811865476,0],[0.7071067811865476,0],[-0.7071067811865476,-0]]}}},"x":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[0,0],[1,0],[1,0],[0,0]]}}},"y":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[0,0],[0,1],[-0,-1],[0,0]]}}},"z":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[1,0],[0,0],[0,0],[-1,-0]]}}},"z_meas":{"Effects":[{"n_qubits":1,"data":{"KrausDecomposition":{"v":1,"dim":[1,2,2],"data":[[1,0],[0,0],[0,0],[0,0]]}}},{"n_qubits":1,"data":{"KrausDecomposition":{"v":1,"dim":[1,2,2],"data":[[0,0],[0,0],[0,0],[1,0]]}}}]}}
\ No newline at end of file
+{"initial_state":{"n_qubits":1,"data":{"Mixed":{"v":1,"dim":[2,2],"data":[[1,0],[0,0],[0,0],[0,0]]}}},"cnot":{"n_qubits":2,"data":{"Unitary":{"v":1,"dim":[4,4],"data":[[1,0],[0,0],[0,0],[0,0],[0,0],[1,0],[0,0],[0,0],[0,0],[0,0],[0,0],[1,0],[0,0],[0,0],[1,0],[0,0]]}}},"i":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[1,0],[0,0],[0,0],[1,0]]}}},"s":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[1,0],[0,0],[0,0],[0,1]]}}},"s_adj":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[1,-0],[0,-0],[0,-0],[0,-1]]}}},"t":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[1,0],[0,0],[0,0],[0.7071067811865476,0.7071067811865476]]}}},"t_adj":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[1,-0],[0,-0],[0,-0],[0.7071067811865476,-0.7071067811865476]]}}},"h":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[0.7071067811865476,0],[0.7071067811865476,0],[0.7071067811865476,0],[-0.7071067811865476,-0]]}}},"x":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[0,0],[1,0],[1,0],[0,0]]}}},"y":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[0,0],[-0,-1],[0,1],[0,0]]}}},"z":{"n_qubits":1,"data":{"Unitary":{"v":1,"dim":[2,2],"data":[[1,0],[0,0],[0,0],[-1,-0]]}}},"z_meas":{"Effects":[{"n_qubits":1,"data":{"KrausDecomposition":{"v":1,"dim":[1,2,2],"data":[[1,0],[0,0],[0,0],[0,0]]}}},{"n_qubits":1,"data":{"KrausDecomposition":{"v":1,"dim":[1,2,2],"data":[[0,0],[0,0],[0,0],[1,0]]}}}]}}