Data for Cloaking a qubit in a cavity.

This repository contains the source data for the article "Cloaking a qubit in a cavity" by Cristóbal Lledó, Rémy Dassonneville, Adrien Moulinas, Joachim Cohen, Ross Shillito, Audrey Bienfait, Benjamin Huard, and Alexandre Blais, Nat Commun 14, 6313 (2023). Link to article: https://doi.org/10.1038/s41467-023-42060-5Figure 2, Vacuum Rabi oscillations in a filled cavity:For panel b, data file "Figure-2_Panel-b_Color-scale-normalization-limits.npy" is an array [min, max] used for the normalization of the color scale plotted with Matplotlib's contourf.Figure 3, Cancellation of the ac-Stark shift and measurement-induced dephasing:For panel a, the data files for the spectral densities are organized in 2D arrays of dimensions 6x907183. Each row correspond to a different value of the drive amplitude, ordered in increasing strength.All other files include a single 1D array.Figure 4, Arm and release qubit readout:The error bars in panel b are one over the square root of the number of shots N=5 x 10^5.Figure 5, Gate error:Data file "Figure-5_No-drives-X-gate-error.npy" is a 1x2 array [avg_error, error_bar] with the average X-gate error and its associated error bar for the case of no cavity nor cancellation drives. This corresponds to the gray shaded area in the figure.Data file "Figure-5_Numerical-X-gate-error-with-cancellation.npy" contains a single datum corresponding to the average gate error obtained from numerical simulations. This corresponds to the dashed red horizontal line in the figure.Supplementary Figure1, Numerical X-gate average error:Data files "Supplementary-Figure-1_Panel-b_Y-axis_Errors.npy", "Supplementary-Figure-1_Panel-c_Y-axis_Errors.npy", and "Supplementary-Figure-1_Panel-d_Y-axis_Errors.npy" contain a 4x21, 4x51, and 4x51 array, respectively. In each of these arrays, each row correspond to a different value of the drive amplitude, ordered in increasing strength.Supplementary Figure 2, Predicted X-gate average error accounting for the Purcell cavity:Data file "Supplementary-Figure-2_X-gate-error-with-cancellation.npy" contains a single datum corresponding to the average gate error obtained with cancellation. This corresponds to the dashed red horizontal line in the figure.Supplementary Figure 5, Readout overlap error comparison for standard disperive and arm-and-release methods:The gray vertical and horizontal lines are at 7.132 and 0.154, respectively. The phase is in units of 2pi, so it goes from -1/2 to +1/2.