CHANGELOG.md

Version v0.1.3 (April 21st, 2023)

This version brings a set of new features in OpenQAOA

What's Changed

• QAOA workflows now support evaluate_circuit which lets compute the energy and measurement outcomes for a QAOA circuit for a specified set of parameter values.
• The library design-wise is moving closer to modularization goal where each hardware provider backend can be installed independently (this feature is expected to fully functional in the next release)
• OpenQAOA v0.1.3 brings in a list of new optimization problems contributed by @alemonbar, including:
  • Maximal Independent Set (MIS)
  • Vehicle Routing Problem (VRP)
  • Bin Packing problem
  • Portfolio Optimization problem

Version v0.1.2 (March 23rd, 2023)

There was a small bug in the code that resulted in qiskit circuit not compiling, resulting in erros on QPUs

• This bug was fixed
• Two additional unittests were added to test for compilation to avoid these errors in future.

Version v0.1.1 (February 23rd, 2023)

This release brings the following new features:

• The ability to plug in custom qubit routing solutions for QAOA circuits.
• AWS managed jobs are now supported through OpenQAOA

What's Changed

• Refactor
  • The new GateMapLabel introduces an updated and a more consistent way to label QAOA gates in the circuit.
• New Features
  • OpenQAOA now supports specifying custom qubit routing algorithms in an expected format in the QAOA workflow. This is implemented in entropicalabs#179

Version v0.1.0 (February 17th, 2023)

This release brings major changes to the structure of OpenQAOA. This is OpenQAOA's first major release! V0.1.0 contains many new features and quite a few breaking changes :)

notice: the license has been changed from apache 2.0 to MIT

What's Changed

• Refactor
  • The code underwent a considerable refactoring effort. The most noticeable change is in the new openqaoa-core and other library plugins in the form openqaoa-xyz.
  • Refactor of the result objects for RQAOA / QAOA by @raulconchello in entropicalabs#122
• New Features
  • New backend: OpenQAOA is now compatible with Azure by @shahidee44 in entropicalabs#167
  • New circuit Ansatz: now OQ allows for the Alternating Operator Ansatz by @shahidee44 in entropicalabs#85
  • New backend: analytical formula for p=1 by @kidiki in entropicalabs#147
  • Shot Adaptative optimizers by @raulconchello in entropicalabs#123
  • Supporting PennyLane optimizers by @raulconchello in entropicalabs#101
  • JSON dumps methods for RQAOA / QAOA by @raulconchello in entropicalabs#122
• Bug fixes
  • Bugfix: QPU qubit overflow by @shahidee44 in entropicalabs#108
  • fix: Spelling of Oxford Quantum Circuits by @christianbmadsen in entropicalabs#141
  • Bugfix vanishing RQAOA instances after elimination by @kidiki in entropicalabs#158

Version v0.0.4 (November 14th, 2022)

This release brings improvements to RQAOA workflow and AWS authentication, and a bugfix to TSP problem class.

What's Changed

• Refactor
  • Authentication Refactor by @shahidee44 in entropicalabs#126
  • RQAOA workflow by @raulconchello in entropicalabs#109
• Fixes
  • Bugfix to Traveling Salesman QUBO Formulation by @Adirlou in entropicalabs#89
  • Use sparse.linalg.expm for exponentiation of sparse matrices (for sci… by @shaohenc in entropicalabs#121
• Docs
  • Fixing the docs by @Q-lds in entropicalabs#113
  • couple of cosmetic fixes to docs by @vishal-ph in entropicalabs#128

New Contributors

• @Adirlou made their first contribution in entropicalabs#89

Full Changelog: https://github.com/entropicalabs/openqaoa/compare/v0.0.3...v0.0.4

Version v0.0.3 (October 29th, 2022)

A release to fix two QPU-related bugs

What's Changed

• Fixes
  • Now save_intermediate works for backends with no jobid #110
  • Fix a bug that prevented the correct usage of Rigetti's QPUs when on QCS #116
• Docs
  • Add community examples containing:
    • MVP bipartite graph examples #104
    • Docplex and general application tutorials #90

New Contributors

• @MaldoAlberto made their first contribution in entropicalabs#90
• @krankgeflugel made their first contribution in entropicalabs#104

Version v0.0.2 (October 19th, 2022)

• Dev
  • OpenQAOA integrates with Amazon Braket!
  • New plotting functions to visualise the most probable bit strings
  • Introduced a lowest_cost_bitstrings function
  • Now it is possible to write a problem statement in DOcplex and have it automatically converted into an OpenQAOA QUBO
  • Unbalanced penalisation strategy for slack variables
• Code
  • New FAQ in the documentation
  • Distinct GitHub actions for dev and main branch testing
  • GitHub actions for publishing
  • GitHub actions for code quality and security
• Fixes
  • qiskit Backend seed simulator fix
  • CVaR bug fix
  • Fix knapsack generation bug
  • Gatemap bug fix

OpenQAOA reference paper uploaded to the arxiv

New Contributors

• @alejomonbar made their first contribution in entropicalabs#72
• @raulconchello made their first contribution in entropicalabs#86
• @EmilianoG-byte made their first contribution in entropicalabs#82

Version v0.0.1 (October 2nd, 2022)

• Initial public release: on Github and PyPI.

Version v0.0.1-beta (July 13th, 2022)

• Initial release (internal).