🐛 Preserve circuit names during mapping

CHANGELOG.md

@@ -22,6 +22,8 @@ _If you are upgrading: please see [`UPGRADING.md`](UPGRADING.md#unreleased)._
 
 ### Fixed
 
+- 🐛 Preserve the input circuit name during mapping ([#1154])
+  ([**@burgholzer**])
 - 🐛 Handle Qiskit targets without calibration properties ([#1152])
   ([**@burgholzer**])
 
@@ -304,6 +306,7 @@ _📚 Refer to the [GitHub Release Notes] for previous changelogs._
 
 <!-- PR links -->
 
+[#1154]: https://github.com/munich-quantum-toolkit/qmap/pull/1154
 [#1152]: https://github.com/munich-quantum-toolkit/qmap/pull/1152
 [#1126]: https://github.com/munich-quantum-toolkit/qmap/pull/1126
 [#1116]: https://github.com/munich-quantum-toolkit/qmap/pull/1116

src/sc/Mapper.cpp

@@ -55,6 +55,7 @@ void Mapper::initResults() {
   results.output.name = qc.getName() + "_mapped";
   results.output.qubits = architecture->getNqubits();
   results.output.gates = std::numeric_limits<std::size_t>::max();
+  qcMapped.setName(qc.getName());
   qcMapped.addQubitRegister(architecture->getNqubits());
 }
 

test/python/sc/test_compile.py

@@ -50,6 +50,15 @@ def test_either_arch_or_calibration(example_circuit: QuantumCircuit) -> None:
         compile_(example_circuit, arch=None, calibration=None)
 
 
+def test_circuit_name_is_preserved(example_circuit: QuantumCircuit) -> None:
+    """Test that mapping preserves the input circuit name."""
+    example_circuit.name = "my_bell_chain"
+
+    mapped, _ = compile_(example_circuit, arch=Arch.IBM_QX4, method=Method.exact)
+
+    assert mapped.name == example_circuit.name
+
+
 # test that all available architecture enumerations can be properly used
 @pytest.mark.parametrize(
     "arch",