This circuit performs two non-invasive quantum measurements on a qubit at two different times, with a rotation applied between the measurements.
```python
from qiskit import *
# Create a QuantumCircuit with 2 qubits and 2 classical bits
qc = QuantumCircuit(2, 2)
# Initialize qubit 0 to the |+⟩ state
qc.h(0)
# Perform a non-invasive measurement at time t1 using qubit 1 as an ancilla
qc.cx(0, 1)
qc.h(1)
qc.measure(1, 0)
qc.h(1)
qc.cx(0, 1)
# Apply evolution between t1 and t2
qc.ry(2.0944, 0) # Rotate by 2π/3 radians
# Perform a non-invasive measurement at time t2 using qubit 1 as an ancilla
qc.cx(0, 1)
qc.h(1)
qc.measure(1, 1)
qc.h(1)
qc.cx(0, 1)
```'Failed to run program: \'409 Client Error: Conflict for url: https://api.quantum.ibm.com/runtime/jobs. {"errors":[{"message":"You have reached the limit of 3 pending jobs. Please wait for a job to complete or cancel one before submitting anything new.","code":3458,"solution":"Wait until some previous jobs were finished. You can cancel pending jobs to run new jobs.","more_info":"https://docs.quantum-computing.ibm.com/errors"}]}\''