This quantum circuit prepares an initial state, creates entanglement between two qubits, and then measures both.
```python
from qiskit import *
# Create circuit with 2 qubits and 2 classical bits
qc = QuantumCircuit(2, 2)
# Prepare Alice's qubit in the state |ψ⟩ = cos(π/8)|0⟩ + sin(π/8)|1⟩
qc.ry(0.7854, 0)
# Create entanglement between Bob's qubit (qubit 1) and Alice's qubit (qubit 0)
qc.h(1)
qc.cx(1, 0)
# Alice measures her qubits
qc.measure([0, 1], [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"}]}\''