fix(estimator): backend needs to be configurable and running on real …

…machine should be synchronously

quafu/algorithms/estimator.py

@@ -53,8 +53,7 @@ def __init__(
                 self._task = task
             else:
                 self._task = Task()
-            self._task.config(backend=self._backend)
-            self._task.config(**task_options)
+            self._task.config(backend=self._backend, **task_options)
 
     def _run_real_machine(self, observables: Hamiltonian):
         """Submit to quafu service"""

quafu/tasks/tasks.py

@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import json
 import copy
 import logging
 from typing import Dict, List, Optional, Tuple
@@ -171,7 +170,7 @@ def run(self, qc: QuantumCircuit, measure_base: List = None) -> ExecResult:
             measure_base (list[str, list[int]]): measure base and its positions.
         """
         if measure_base is None:
-            res = self.send(qc)
+            res = self.send(qc, wait=True)
             res.measure_base = ""
 
         else:
@@ -181,7 +180,7 @@ def run(self, qc: QuantumCircuit, measure_base: List = None) -> ExecResult:
                 elif base == "Y":
                     qc.rx(pos, np.pi / 2)
 
-            res = self.send(qc)
+            res = self.send(qc, wait=True)
             res.measure_base = measure_base
 
         return res