qedtool 0.1.0

A tool for numerical quantum information calculations in tree-level quantum electrodynamics (QED).

QEDtool: A Python package for numerical quantum information in quantum electrodynamics

Description

qedtool is a Python-based object-oriented tool that allows users to calculate quantum information quantities from relativistic perturbative quantum electrodynamics (QED) at tree-level. It contains functions that define 3-vectors, 4-vectors, Dirac spinors, propagators and quantum states, that can be Lorentz transformed in their corresponding representations. With qedtool, users can calculate

• polarized tree-level QED Feynman amplitudes,
• scattering probabilities and quantum informational quantities for pure and mixed polarization states,
• the full emitted quantum state (with built-in functions for 2-to-2 particle scattering).

From the emitted quantum state, users can compute

• the differential cross section (2-to-2 scattering)
• the degree of two-particle entanglement of emitted states,
• $n$-particle Stokes parameters,
• single- and two-particle degree of polarization.

These quantities can be studied from arbitrary reference frames by means of Lorentz transformations. The documentation of qedtool is contained within our paper:

The examples/ directory contains Jupyter notebooks with examples as presented in our paper; from defining and performing operations vectors, spinors, and particles, to complete scattering processes. If you find qedtool useful in your research, please cite our paper.

Installation

In addition to cloning qedtool from this GitHub repository, it can be installed using the following command line:

  pip install qedtool

License

qedtool is licensed under the MIT license.