switch order of route and decompose #145
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Yeah, correct. But if the initial circuit has n-qubit gates in it, with n>2, it needs to be decomposed also before routing. So in general the order is decompose-route-decompose. |
| circuit_routed, _, _ = sampler.device.route_circuit(circuit) | ||
| circuit_decomposed = sampler.device.decompose_circuit(circuit_routed) | ||
| circuit = simplify_circuit(circuit_decomposed) |
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Did you test this against a station? Does route_circuit accept CX, which is not a native gate?
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Yes, I tested it with a QAOA and GHZ: routing takes CNOT gates even though they are not native to sampler.device.
Currently, the example proposes to first run
decompose_circuitfollowed by aroute_circuit.However, if the routing needs to introduce swap gates, these will stay in the circuit until execution where they lead to an error:
Therefore, the order of these two operations needs to be reversed.