Changes between Version 7 and Version 8 of Density

Timestamp:

Oct 24, 2025, 12:00:01 PM (5 days ago)

Author:

Durupt

Comment:

--

Density

@@ -24 +24 @@
 The user is then asked to edit the different cards needed for the run. The information for the density matrices computation is given in the reweight_card. Examples for different benchmark processes are given in https://arxiv.org/abs/2510.17730. At the end of the run, the density matrix for each event is written in the Les Houches Event (LHE) file.
 
-==How to read the density matrices in the LHE file
+== How to read the density matrices in the LHE file
 The LHE file can be read with the parser lhe_parser.py available in MadGraph. An example of code that would parse the density matrix value for each event is:
 
-{{{
+{{{#!python
 import sys
 sys.path.append('PATH TO MADGRAPH')
@@ -42 +42 @@
 With this code, for each event of the file, you read the value `density` which contains the independent coefficients of the density matrix. The utility function `square_matrix` allows to write it in the usual matrix form needed for further analysis.
 
+== Implementation of the quantum information obseravbles
+Now that we have the density matrices for each event, we can compute any quantum information observable that we want. The library `Density_functions.py` contains a non-exaustive list of them that will be listed here and that can be called (example of the concurrence here) via.
+{{{#!python
+dens.Get_Concurrence(density)
+}}}
+We will now give a list of the different quantum information observables currently available in the library.
+For more physical and more detailed descriptions of the observables, read https://arxiv.org/abs/2510.17730.
+
+=== Purity 
+
+=== Concurrence
+
+=== Bell test
+
+=== D coefficients
+
+=== Entanglement of formation
+
+=== Magic
+
+=== Negativity
+
+=== Mana
+
+=== Peres-Horodecki criterion
+
+=== Trace distance
+
+=== Fidelity distance
+