def _gate_definition_to_qiskit_definition(self, node, params): """From a gate definition in qasm, to a gate.definition format.""" definition = [] qreg = QuantumRegister(node['n_bits']) bit_args = {node['bits'][i]: q for i, q in enumerate(qreg)} exp_args = {node['args'][i]: Real(q) for i, q in enumerate(params)} for child_op in node['body'].children: qparams = [] eparams = [] for param_list in child_op.children[1:]: if param_list.type == 'id_list': qparams = [bit_args[param.name] for param in param_list.children] elif param_list.type == 'expression_list': for param in param_list.children: eparams.append(param.sym(nested_scope=[exp_args])) op = self._create_op(child_op.name, params=eparams) definition.append((op, qparams, [])) return definition
def _gate_rules_to_qiskit_circuit(self, node, params): """From a gate definition in qasm, to a QuantumCircuit format.""" rules = [] qreg = QuantumRegister(node['n_bits']) bit_args = {node['bits'][i]: q for i, q in enumerate(qreg)} exp_args = {node['args'][i]: Real(q) for i, q in enumerate(params)} for child_op in node['body'].children: qparams = [] eparams = [] for param_list in child_op.children[1:]: if param_list.type == 'id_list': qparams = [bit_args[param.name] for param in param_list.children] elif param_list.type == 'expression_list': for param in param_list.children: eparams.append(param.sym(nested_scope=[exp_args])) op = self._create_op(child_op.name, params=eparams) rules.append((op, qparams, [])) circ = QuantumCircuit(qreg) for instr, qargs, cargs in rules: circ._append(instr, qargs, cargs) return circ