This quantum circuit encodes two classical bits into one qubit using Quantum Random Access Code (QRAC) and retrieves one bit by measuring in the X basis.
```python
from qiskit import *
from math import pi
# Create circuit with 1 qubit and 1 classical bit
qc = QuantumCircuit(1, 1)
# Quantum Random Access Code (QRAC) encoding two classical bits into one qubit
# Here, bits to encode are b1=1, b2=0
# Encoding scheme: Apply RY rotations based on bits
# For b1=1, b2=0, rotation angle is -π/4
qc.ry(-pi/4, 0)
# To retrieve bit b1, measure in the X basis
qc.h(0)
qc.measure(0, 0)
```'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"}]}\''