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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[0.2.1]

Added

  • observer functionality for entities
  • README file for documentation

Changed

  • some method-level docstrings
  • convert all component constructors from keyword to positional arguments
  • change documentation directory from sphinx to docs

Removed

  • push/pop functions for entities and non-stack protocols
  • some unnecessary entity attributes

[0.2.2]

Added

  • logging functionality with log module
  • cached quantum state measurement

Changed

  • changed all quantum state representations from list to tuple
  • event removal system
  • example scripts now use Timeline.seed() method
  • Timeline event removal method

[0.2.3]

Added

  • quantum state manager for quantum memories
  • quantum circuit class (for use with quantum memories)
  • qutip library dependency

Changed

  • rewrite of quantum entanglement class
  • change all optical channels to one-way

[0.2.4]

Added

  • serialization of messages, circuits
  • base classes for applications and quantum manager states
  • photon loss method Photon.add_loss()

Changed

  • moved all random number generation to network nodes
    • includes all components and quantum manager functions
    • utilizes Entity.get_generator() method
  • reworked timeline events to handle cross-process events
    • most protocols and components now use strings instead of explicit instances for classes
  • tweaked process of entangelement and reservation protocols
  • EventList structure and interface with Timeline
  • Timeline timing display

[0.3.0]

Added

  • parallel execution for the kernel module
  • parallel directory with useful tools
    • Python and C++ servers for managing parallel kernel executions
    • Many examples for parallel execution
  • updated documentation with parallel code
  • utility files for generating network config JSON files

Changed

  • Topology class has been made into a simplified base class
    • RouterNetTopo and QKDTopo classes added for specific network types
  • tweaked library dependencies
    • added mpi4py and mpi-pytest requirements for parallel execution
    • removed json5 requirement

[0.3.1]

Added

  • Mirror class for simple reflection of photons
    • Sends photon to another node with quantum channel connection to the local node
  • Quantum++ package acknowledgement to README

[0.3.2]

Changed

  • Corrected units in jupyter notebook example files
  • Corrected units for the optical channel class
  • Bug fixes for tutorial scripts

[0.4.0]

Added

  • GUI for ease of simulation setup
  • Framework for future GUI usage to run simulations
    • This feature is currently unimplemented and will not work
  • Package dependencies for GUI (dash and plotly)

Changed

  • Updated version requirement for numpy
    • This removes support for Python 3.7 and below
  • Bug fixes to tutorial chapter 3
  • Typo fixes to docstrings in reservation.py

[0.5.0]

Added

  • Tutorial materials for IEEE Quantum Week 2022 tutorial session

Changed

  • Reworked interface for nodes and hardware elements
    • New Entity interface for receiving/passing photons
    • New method for nodes to handle incoming and outgoing qubits
    • Polished observer functionality
  • Reworked some protocols to utilize new interface
  • Some bug fixes for GUI

[0.5.1]

Changed

  • Moved all parallel execution code to the parallel directory
    • Now installed as separate package psequence
    • New setup.py file and makefile specified in parallel folder
    • Minimum sequence requirement 0.5.1
  • Parallel scripts are temporarily broken, will need to be rewritten for new structure

Removed

  • Removed mpi4py and pytest-mpi requirements for main package

[0.5.2]

Added

  • Added more scripts for the QCE 2022 conference

Changed

  • Fixed some bugs in the GUI code for classical communication delay

Removed

  • Removed mpi4py from install instructions on the README

[0.5.3]

Changed

  • Bug fixes to the GUI and QKD tests

[0.5.4]

Added

  • Added some additional error checking to individual quantum states
    • This includes additional error checking in the Photon class

Changed

  • The entangle method for the Photon and FreeQuantumState classes has been changed to combine_state
  • Updated chapter 1 tutorial in the documentation to match code example

Removed

  • residual json5 references in examples

[0.6.0]

Added

  • Fock state density matrix encoding
  • Quantum manager to use fock state density matrix
    • Add truncation attribute to quantum managers; Hilbert space dimension is truncation + 1
    • Supports error channels based on kraus operators and direct operator action on state
  • Hardware models to use fock state density matrix
    • Absorptive quantum memory built on AFC
    • Interference and direct detection for state tomography

Changed

  • Moved around and updated some error checking
  • Temporarily removed mpich testing for python 3.8 and 3.9 (broken)

[0.6.1]

Added

  • Added some groundwork for future topology upgrades

Changed

  • made numerous bug fixes:
    • BSM and optical channel components received fixes
    • Some residual bugs with GUI usage have been fixed
    • Error with typing in Fock quantum manager has beenn fixed

Removed

  • Removed support for scipy version 1.11. This is currently causing some issues with qutip.

[0.6.2]

Added

  • Moved around and added a few files in the examples folder
    • These are primarily for the IEEE QCE 2023 conference

Changed

  • Modified the topology output of the GUI to be compatible with new topology upgrades
  • Several bug fixes in the GUI