Add capability to execute a Qiskit unitary simulator

api.py

@@ -32,3 +32,11 @@ def get_statevector(qasm, backend_to_run='statevector_simulator'):
     result_sim = job_sim.result()
     output_state = result_sim.get_statevector(circuit, decimals=3)
     return output_state
+
+def get_unitary(qasm, backend_to_run='unitary_simulator'):
+    circuit = QuantumCircuit.from_qasm_str(qasm)
+    backend = BasicAer.get_backend(backend_to_run)
+    job_sim = execute(circuit, backend)
+    result_sim = job_sim.result()
+    output_state = result_sim.get_unitary(circuit, decimals=3)
+    return output_state

server.py

@@ -14,7 +14,7 @@
 # limitations under the License.
 #
 from flask import Flask, jsonify, request
-from api import run_qasm, get_statevector
+from api import run_qasm, get_statevector, get_unitary
 import json_tricks
 
 app = Flask(__name__)
@@ -53,5 +53,18 @@ def statevector():
     return ret_val
 
 
+@app.route('/api/run/unitary', methods=['GET'])
+def unitary():
+    qasm = request.args['qasm']
+    backend = request.args['backend']
+    print("--------------")
+    print('qasm: ', qasm)
+    print('backend: ', backend)
+    print("^^^^^^^^^^^^^^")
+    output = get_unitary(qasm, backend)
+    ret_val = json_tricks.dumps(output) # dump complex vector as json strings
+    return ret_val
+
+
 if __name__ == '__main__':
     app.run(host='127.0.0.1', port=5000)