6 physical cats

Backend name : EMU:6Q:PHYSICAL_CATS

Backend type : Emulator, physical

About this backend

EMU:6Q:PHYSICAL_CATS 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].

Supported backend parameters

• average_nb_photons
  • Supported values: 4 and above
• kappa_1
  • Supported values: 10 and above
• kappa_2
  • Supported values: 100 and above

💡 The kappa_1 / kappa_2 ratio must be between 1e-7 and 1e-1

Read more about backend parameters here

Supported gates

• delay
• initialize(value, 0)
  • value can only be one of the following: 0, 1, + or -
• z(0)
• x(0)
• rz(0)
• cx(control_index, target_index)
• measure(0, clbit_index)
• measure_x(0, clbit_index)

Read more about supported gates here.

Supported providers

• ✅ AliceBobLocalProvider
• ✅ AliceBobRemoteProvider

Connectivity

Expected performance

This backend features an error model based on theoretical papers. It is not meant to accurately reproduce a specific current or future Alice & Bob chip.

The formulas and references we used are documented in the source code at https://github.com/Alice-Bob-SW/qiskit-alice-bob-provider/blob/main/qiskit_alice_bob_provider/processor/physical_cat.py

Availability schedule

As an emulator, this backend is expected to be available 24/7.

Live status for backends is available at https://api-gcp.alice-bob.com/console/status.