Check whether qubits are active before applying operator

Author: david-pl

src/bloqade/pyqrack/squin/qubit.py

@@ -25,8 +25,13 @@ def new(self, interp: PyQrackInterpreter, frame: interp.Frame, stmt: qubit.New):
 
     @interp.impl(qubit.Apply)
     def apply(self, interp: PyQrackInterpreter, frame: interp.Frame, stmt: qubit.Apply):
-        operator: OperatorRuntimeABC = frame.get(stmt.operator)
         qubits: ilist.IList[PyQrackQubit, Any] = frame.get(stmt.qubits)
+
+        for qbit in qubits:
+            if not qbit.is_active():
+                return ()
+
+        operator: OperatorRuntimeABC = frame.get(stmt.operator)
         operator.apply(*qubits)
 
     @interp.impl(qubit.Broadcast)

test/pyqrack/test_squin.py

@@ -314,7 +314,8 @@ def main():
 def test_wire():
     @squin.wired
     def main():
-        w = squin.wire.unwrap(1)
+        q = squin.qubit.new(1)
+        w = squin.wire.unwrap(q[0])
         x = squin.op.x()
         squin.wire.apply(x, w)
         return w