Allow specifying settings field from Cirq-ionq

cirq-ionq/cirq_ionq/ionq_client.py

@@ -142,6 +142,8 @@ def create_job(
             json['name'] = name
         # We have to pass measurement keys through the metadata.
         json['metadata'] = serialized_program.metadata
+        if serialized_program.settings:
+            json['settings'] = serialized_program.settings
 
         # Shots are ignored by simulator, but pass them anyway.
         json['shots'] = str(repetitions)

cirq-ionq/cirq_ionq/ionq_client_test.py

@@ -97,7 +97,10 @@ def test_ionq_client_create_job(mock_post):
 
     client = ionq.ionq_client._IonQClient(remote_host='http://example.com', api_key='to_my_heart')
     program = ionq.SerializedProgram(
-        body={'job': 'mine'}, metadata={'a': '0,1'}, error_mitigation={'debias': True}
+        body={'job': 'mine'},
+        metadata={'a': '0,1'},
+        settings={'aaa': 'bb'},
+        error_mitigation={'debias': True},
     )
     response = client.create_job(
         serialized_program=program, repetitions=200, target='qpu', name='bacon'
@@ -109,9 +112,10 @@ def test_ionq_client_create_job(mock_post):
         'lang': 'json',
         'body': {'job': 'mine'},
         'name': 'bacon',
+        'metadata': {'shots': '200', 'a': '0,1'},
+        'settings': {'aaa': 'bb'},
         'shots': '200',
         'error_mitigation': {'debias': True},
-        'metadata': {'shots': '200', 'a': '0,1'},
     }
     expected_headers = {
         'Authorization': 'apiKey to_my_heart',
@@ -129,7 +133,7 @@ def test_ionq_client_create_job_extra_params(mock_post):
     mock_post.return_value.json.return_value = {'foo': 'bar'}
 
     client = ionq.ionq_client._IonQClient(remote_host='http://example.com', api_key='to_my_heart')
-    program = ionq.SerializedProgram(body={'job': 'mine'}, metadata={'a': '0,1'})
+    program = ionq.SerializedProgram(body={'job': 'mine'}, metadata={'a': '0,1'}, settings={})
     response = client.create_job(
         serialized_program=program,
         repetitions=200,
@@ -166,7 +170,7 @@ def test_ionq_client_create_job_default_target(mock_post):
     client = ionq.ionq_client._IonQClient(
         remote_host='http://example.com', api_key='to_my_heart', default_target='simulator'
     )
-    _ = client.create_job(ionq.SerializedProgram(body={'job': 'mine'}, metadata={}))
+    _ = client.create_job(ionq.SerializedProgram(body={'job': 'mine'}, metadata={}, settings={}))
     assert mock_post.call_args[1]['json']['target'] == 'simulator'
 
 
@@ -179,7 +183,7 @@ def test_ionq_client_create_job_target_overrides_default_target(mock_post):
         remote_host='http://example.com', api_key='to_my_heart', default_target='simulator'
     )
     _ = client.create_job(
-        serialized_program=ionq.SerializedProgram(body={'job': 'mine'}, metadata={}),
+        serialized_program=ionq.SerializedProgram(body={'job': 'mine'}, metadata={}, settings={}),
         target='qpu',
         repetitions=1,
     )
@@ -190,7 +194,9 @@ def test_ionq_client_create_job_no_targets():
     client = ionq.ionq_client._IonQClient(remote_host='http://example.com', api_key='to_my_heart')
     with pytest.raises(AssertionError, match='neither were set'):
         _ = client.create_job(
-            serialized_program=ionq.SerializedProgram(body={'job': 'mine'}, metadata={})
+            serialized_program=ionq.SerializedProgram(
+                body={'job': 'mine'}, metadata={}, settings={}
+            )
         )
 
 
@@ -204,7 +210,9 @@ def test_ionq_client_create_job_unauthorized(mock_post):
     )
     with pytest.raises(ionq.IonQException, match='Not authorized'):
         _ = client.create_job(
-            serialized_program=ionq.SerializedProgram(body={'job': 'mine'}, metadata={})
+            serialized_program=ionq.SerializedProgram(
+                body={'job': 'mine'}, metadata={}, settings={}
+            )
         )
 
 
@@ -218,7 +226,9 @@ def test_ionq_client_create_job_not_found(mock_post):
     )
     with pytest.raises(ionq.IonQNotFoundException, match='not find'):
         _ = client.create_job(
-            serialized_program=ionq.SerializedProgram(body={'job': 'mine'}, metadata={})
+            serialized_program=ionq.SerializedProgram(
+                body={'job': 'mine'}, metadata={}, settings={}
+            )
         )
 
 
@@ -232,7 +242,9 @@ def test_ionq_client_create_job_not_retriable(mock_post):
     )
     with pytest.raises(ionq.IonQException, match='Status: 409'):
         _ = client.create_job(
-            serialized_program=ionq.SerializedProgram(body={'job': 'mine'}, metadata={})
+            serialized_program=ionq.SerializedProgram(
+                body={'job': 'mine'}, metadata={}, settings={}
+            )
         )
 
 
@@ -253,7 +265,9 @@ def test_ionq_client_create_job_retry(mock_post):
     test_stdout = io.StringIO()
     with contextlib.redirect_stdout(test_stdout):
         _ = client.create_job(
-            serialized_program=ionq.SerializedProgram(body={'job': 'mine'}, metadata={})
+            serialized_program=ionq.SerializedProgram(
+                body={'job': 'mine'}, metadata={}, settings={}
+            )
         )
     assert test_stdout.getvalue().strip() == 'Waiting 0.1 seconds before retrying.'
     assert mock_post.call_count == 2
@@ -268,7 +282,7 @@ def test_ionq_client_create_job_retry_request_error(mock_post):
         remote_host='http://example.com', api_key='to_my_heart', default_target='simulator'
     )
     _ = client.create_job(
-        serialized_program=ionq.SerializedProgram(body={'job': 'mine'}, metadata={})
+        serialized_program=ionq.SerializedProgram(body={'job': 'mine'}, metadata={}, settings={})
     )
     assert mock_post.call_count == 2
 
@@ -286,7 +300,9 @@ def test_ionq_client_create_job_timeout(mock_post):
     )
     with pytest.raises(TimeoutError):
         _ = client.create_job(
-            serialized_program=ionq.SerializedProgram(body={'job': 'mine'}, metadata={})
+            serialized_program=ionq.SerializedProgram(
+                body={'job': 'mine'}, metadata={}, settings={}
+            )
         )
 
 

cirq-ionq/cirq_ionq/serializer.py

@@ -35,10 +35,13 @@ class SerializedProgram:
     Attributes:
         body: A dictionary which contains the number of qubits and the serialized circuit
             minus the measurements.
+        settings: A dictionary of settings which can override behavior for this circuit when
+            run on IonQ hardware.
         metadata: A dictionary whose keys store information about the measurements in the circuit.
     """
 
     body: dict
+    settings: dict
     metadata: dict
     error_mitigation: Optional[dict] = None
 
@@ -77,7 +80,10 @@ def __init__(self, atol: float = 1e-8):
         }
 
     def serialize(
-        self, circuit: cirq.AbstractCircuit, error_mitigation: Optional[dict] = None
+        self,
+        circuit: cirq.AbstractCircuit,
+        job_settings: Optional[dict] = None,
+        error_mitigation: Optional[dict] = None,
     ) -> SerializedProgram:
         """Serialize the given circuit.
 
@@ -100,7 +106,12 @@ def serialize(
         }
         metadata = self._serialize_measurements(op for op in serialized_ops if op['gate'] == 'meas')
 
-        return SerializedProgram(body=body, metadata=metadata, error_mitigation=error_mitigation)
+        return SerializedProgram(
+            body=body,
+            metadata=metadata,
+            settings=(job_settings or {}),
+            error_mitigation=error_mitigation,
+        )
 
     def _validate_circuit(self, circuit: cirq.AbstractCircuit):
         if len(circuit) == 0:

cirq-ionq/cirq_ionq/serializer_test.py

@@ -59,6 +59,18 @@ def test_serialize_implicit_num_qubits():
     assert result.body['qubits'] == 3
 
 
+def test_serialize_settings():
+    q0 = cirq.LineQubit(2)
+    circuit = cirq.Circuit(cirq.X(q0))
+    serializer = ionq.Serializer()
+    result = serializer.serialize(circuit, job_settings={"foo": "bar", "key": "heart"})
+    assert result == ionq.SerializedProgram(
+        body={'gateset': 'qis', 'qubits': 3, 'circuit': [{'gate': 'x', 'targets': [2]}]},
+        metadata={},
+        settings={"foo": "bar", "key": "heart"},
+    )
+
+
 def test_serialize_non_gate_op_invalid():
     q0 = cirq.LineQubit(0)
     circuit = cirq.Circuit(cirq.X(q0), cirq.CircuitOperation(cirq.FrozenCircuit()))
@@ -89,6 +101,7 @@ def test_serialize_pow_gates():
                     'circuit': [{'gate': name, 'targets': [0], 'rotation': exponent * np.pi}],
                 },
                 metadata={},
+                settings={},
             )
 
 
@@ -101,6 +114,7 @@ def test_serialize_pauli_gates():
         assert result == ionq.SerializedProgram(
             body={'gateset': 'qis', 'qubits': 1, 'circuit': [{'gate': name, 'targets': [0]}]},
             metadata={},
+            settings={},
         )
 
 
@@ -112,12 +126,14 @@ def test_serialize_sqrt_x_gate():
     assert result == ionq.SerializedProgram(
         body={'gateset': 'qis', 'qubits': 1, 'circuit': [{'gate': 'v', 'targets': [0]}]},
         metadata={},
+        settings={},
     )
     circuit = cirq.Circuit(cirq.X(q0) ** (-0.5))
     result = serializer.serialize(circuit)
     assert result == ionq.SerializedProgram(
         body={'gateset': 'qis', 'qubits': 1, 'circuit': [{'gate': 'vi', 'targets': [0]}]},
         metadata={},
+        settings={},
     )
 
 
@@ -129,12 +145,14 @@ def test_serialize_s_gate():
     assert result == ionq.SerializedProgram(
         body={'gateset': 'qis', 'qubits': 1, 'circuit': [{'gate': 's', 'targets': [0]}]},
         metadata={},
+        settings={},
     )
     circuit = cirq.Circuit(cirq.Z(q0) ** (-0.5))
     result = serializer.serialize(circuit)
     assert result == ionq.SerializedProgram(
         body={'gateset': 'qis', 'qubits': 1, 'circuit': [{'gate': 'si', 'targets': [0]}]},
         metadata={},
+        settings={},
     )
 
 
@@ -146,6 +164,7 @@ def test_serialize_h_gate():
     assert result == ionq.SerializedProgram(
         body={'gateset': 'qis', 'qubits': 1, 'circuit': [{'gate': 'h', 'targets': [0]}]},
         metadata={},
+        settings={},
     )
 
     with pytest.raises(ValueError, match=r'H\*\*0.5'):
@@ -161,12 +180,14 @@ def test_serialize_t_gate():
     assert result == ionq.SerializedProgram(
         body={'gateset': 'qis', 'qubits': 1, 'circuit': [{'gate': 't', 'targets': [0]}]},
         metadata={},
+        settings={},
     )
     circuit = cirq.Circuit(cirq.Z(q0) ** (-0.25))
     result = serializer.serialize(circuit)
     assert result == ionq.SerializedProgram(
         body={'gateset': 'qis', 'qubits': 1, 'circuit': [{'gate': 'ti', 'targets': [0]}]},
         metadata={},
+        settings={},
     )
 
 
@@ -184,6 +205,7 @@ def test_serialize_parity_pow_gate():
                     'circuit': [{'gate': name, 'targets': [0, 1], 'rotation': exponent * np.pi}],
                 },
                 metadata={},
+                settings={},
             )
 
 
@@ -199,6 +221,7 @@ def test_serialize_cnot_gate():
             'circuit': [{'gate': 'cnot', 'control': 0, 'target': 1}],
         },
         metadata={},
+        settings={},
     )
 
     with pytest.raises(ValueError, match=r'CNOT\*\*0.5'):
@@ -214,6 +237,7 @@ def test_serialize_swap_gate():
     assert result == ionq.SerializedProgram(
         body={'gateset': 'qis', 'qubits': 2, 'circuit': [{'gate': 'swap', 'targets': [0, 1]}]},
         metadata={},
+        settings={},
     )
 
     with pytest.raises(ValueError, match=r'SWAP\*\*0.5'):
@@ -229,6 +253,7 @@ def test_serialize_measurement_gate():
     assert result == ionq.SerializedProgram(
         body={'gateset': 'native', 'qubits': 1, 'circuit': []},
         metadata={'measurement0': f'tomyheart{chr(31)}0'},
+        settings={},
     )
 
 
@@ -240,6 +265,7 @@ def test_serialize_measurement_gate_target_order():
     assert result == ionq.SerializedProgram(
         body={'gateset': 'native', 'qubits': 3, 'circuit': []},
         metadata={'measurement0': f'tomyheart{chr(31)}2,0'},
+        settings={},
     )
 
 
@@ -271,6 +297,7 @@ def test_serialize_native_gates():
             ],
         },
         metadata={},
+        settings={},
     )
 
 
@@ -282,6 +309,7 @@ def test_serialize_measurement_gate_multiple_keys():
     assert result == ionq.SerializedProgram(
         body={'gateset': 'native', 'qubits': 2, 'circuit': []},
         metadata={'measurement0': f'a{chr(31)}0{chr(30)}b{chr(31)}1'},
+        settings={},
     )
 
 

cirq-ionq/cirq_ionq/service.py

@@ -37,6 +37,7 @@ def __init__(
         default_target: Optional[str] = None,
         api_version='v0.3',
         max_retry_seconds: int = 3600,
+        job_settings: Optional[dict] = None,
         verbose=False,
     ):
         """Creates the Service to access IonQ's API.
@@ -55,6 +56,8 @@ def __init__(
                 'simulator'.
             api_version: Version of the api. Defaults to 'v0.3'.
             max_retry_seconds: The number of seconds to retry calls for. Defaults to one hour.
+            job_settings: A dictionary of settings which can override behavior for circuits when
+                run on IonQ hardware.
             verbose: Whether to print to stdio and stderr on retriable errors.
 
         Raises:
@@ -67,7 +70,10 @@ def __init__(
             or os.getenv('IONQ_REMOTE_HOST')
             or f'https://api.ionq.co/{api_version}'
         )
+
+        self.job_settings = job_settings or {}
         self.api_key = api_key or os.getenv('CIRQ_IONQ_API_KEY') or os.getenv('IONQ_API_KEY')
+
         if not self.api_key:
             raise EnvironmentError(
                 'Parameter api_key was not specified and the environment variable '
@@ -175,7 +181,9 @@ def create_job(
         Raises:
             IonQException: If there was an error accessing the API.
         """
-        serialized_program = serializer.Serializer().serialize(circuit, error_mitigation)
+        serialized_program = serializer.Serializer().serialize(
+            circuit, job_settings=self.job_settings, error_mitigation=error_mitigation
+        )
         result = self._client.create_job(
             serialized_program=serialized_program,
             repetitions=repetitions,