This circuit simulates a single step of a discrete quantum walk using a coin and position qubit.
This quantum circuit simulates a single step of a discrete quantum walk using a coin qubit and a position qubit. The coin qubit is placed into superposition using a Hadamard gate, and then a conditional shift operation moves the walker based on the state of the coin qubit. Both qubits are then measured to observe the result of the walk.
```python
from qiskit import QuantumCircuit
# Create a circuit with 2 qubits and 2 classical bits
qc = QuantumCircuit(2, 2)
# Apply Hadamard gate to the coin qubit to create superposition
qc.h(0)
# Conditional shift: move the position qubit based on the coin qubit
qc.cx(0, 1)
# Measure both 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"}]}\''