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Lescanne 2020

Backend name : EMU:1Q:LESCANNE_2020

Backend type : Emulator, physical

About this backend

EMU:1Q:LESCANNE_2020 is a numerical model emulating the processor used in the seminal paper by Raphaël Lescanne in 2020, featuring a single cat qubit.

This numerical model is configured to act as a digital twin of the chip used in this paper, using the following parameters:

  • Readout assignment matrix for Mz and Mx: P(1|0)=0.02, P(0|1)=0.06
  • Perfect preparation for Px and Pz
  • Pauli error probabilities interpolated for the “delay/idle” instruction from the T_bf and Gamma_pf plots in the paper

Please note that this design dates back to 2020 and does not represent the current performance of Alice & Bob's cat qubits. Better designs such as the ones documented here have been introduced and will soon be available through Felis.

Supported backend parameters

  • average_nb_photons
    • Supported values: 1 to 7

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)
  • rz(0)
  • measure(0, clbit_index)
  • measure_x(0, clbit_index)

Read more about supported gates here.

Supported providers

  • ✅ AliceBobLocalProvider
  • ✅ AliceBobRemoteProvider

Connectivity

N/A - This backend features a single qubit.

Expected performance

A sample notebook showing this backend's bit-flip and phase-flip scaling is available at https://github.com/Alice-Bob-SW/felis/blob/main/samples/1_hardware_experiments/1%20-%20Bit-flip%20and%20phase-flip%20scaling%20on%20a%20physical%20qubit.ipynb.

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.