Data for Four-Photon Subtraction from Picosecond Squeezed Vacuum Demonstrating Wigner Negativity without Loss Correction

Zenodo (CERN European Organization for Nuclear Research) 2026 Dataset Open access

Read full text
Authors: Mamoru Endo, Takefumi Nomura, Tatsuki Sonoyama, Kazuma Takahashi, Sachiko Takasu, Daiji Fukuda, Takahiro Kashiwazaki, Asuka Inoue, Takeshi Umeki, Rajveer Nehra, Petr Marek, Radim Filip
+3 more Kan Takase, Warit Asavanant, Akira Furusawa
DOI: 10.5281/zenodo.19533547
Cited by: 1

Abstract

Data for generating figures in the paper. plot_wigners.ipynb - code for generating the figures from the datarho_0tap_bootstrap_1000.npy - density matrices without postselectionrho_0photon_bootstrap_1000.npy - density matrices for subtracting 0 photonsrho_1photon_bootstrap_1000.npy - density matrices for subtracting 1 photonrho_2photon_bootstrap_1000.npy - density matrices for subtracting 2 photonsrho_3photon_bootstrap_1000.npy - density matrices for subtracting 3 photonsrho_4photon_bootstrap_1000.npy - density matrices for subtracting 4 photonswigners_mean.npy - calculated average Wigner functions for evaluating negativitywigners_std.npy - calculated standard deviation for the average Wigner functions for evaluating negativity

Publication details

Journal / source
Zenodo (CERN European Organization for Nuclear Research)
Publication date
12 April 2026
Document type
Dataset