6 physical cats

backend = local.get_backend('EMU:6Q:PHYSICAL_CATS')
# This backend is not available in Alice & Bob Felis cloud service.

This backend reproduces the behavior of a chip featuring 6 cat qubits, with a circular neighbor connectivity (each qubit has two neighbors).

It only supports bias-preserving gates (see Supported instructions).

It can be used to implement the smallest error correction code.

This backend is configured to have the same properties as the qubits used in the paper High-performance repetition cat code using fast noisy operations [Le Régent et al., 2022]. It is not meant to accurately reproduce a specific current or future Alice & Bob chip.

More details about our assumptions can be found in the comments of the backend’s code: https://github.com/Alice-Bob-SW/qiskit-alice-bob-provider/blob/main/qiskit_alice_bob_provider/processor/physical_cat.py#L178