Release 0.24.0

Changes

• added multi-qubit arities to state constructor functions
• added SPSA optimization method
• added quantum metrics like classical/quantum fisher matrix calculations
• simplified hamiltonian creation
• added simulation result pragmas to QASM3 export

Release 0.23.0

Changes

• enhanced the variational algorithm template to support ML algorithms like VQC and QNN
• improved parameter shift gradient optimization
• fixed target qubit mapping for Fredkin gate in gate application

Release 0.22.0

Changes

• enhanced operation registry for Braket devices
• added Braket gate names in qasm3 emission
• always collect trajectories for hardware simulator
• use noisy measurements and trajectories in result extraction
• updated Clay

Release 0.21.0

Changes

• added options to qasm3 emission for customized OpenQASM (e.g. Braket, IBMQ)
• fixed hardware simulator execution result with result specs

Release 0.20.0

Changes

• updated and enhanced device list for the hardware simulator
• added creation of parent directories for files to be saved
• fixed hardware simulator execution result
• fixed inverse qubit mapping
• updated the tutorial

Release 0.19.0

Changes

• added stabilizer framework and error correction codes
  • bit flip and phase flip
  • 5 qubit code
  • Steane code
  • Shor code
• integrated error correction codes in optimization pipeline
• added reverse qubit mapping for results of optimized circuits
• circuit execution improvements
  • reduced default shots to 128 and raised the timeout in the backend
  • added circuit to result of execute-circuit
  • fixed noisy measurement result extraction
• updated the tutorial

Release 0.18.0

Changes

• unified and improved variational algorithms
  • unified and improved variational algorithms analysis
  • refactored VQE to use the variational-algorithm template
  • refactored QAOA to use the variational-algorithm template
  • enhanced the QAOA result extraction
• added fidelity estimation functions to the device namespace
• updated device in ideal simulator
• renamed percent properties of optimization-statistics result
• updated the tutorial

Release 0.17.0

Changes

• enhancements and fixes for the circuit/hardware optimization pipeline
  • added inverse gate cancellation and rotation folding/removal
  • fixed some flag checks
• added :hiccup format for SVG visualizations
• updated clay version
• enhanced the tutorial and published it to cljdoc
• minor fixes

Release 0.16.0

Changes

• added a device namespace in domain
• moved the topology namespace to domain
• restructured backend protocols and implementations
  • decoupled devices from quantum backends, a backend can handle multiple devices now
  • the hardware simulator brings a list of simulatable devices
  • topology optimization is enabled for hardware simulator
• refactored the optimization pipeline functions to use an optimization context as input/output
• added functions for circuit and optimization statistics
• reworking OpenQASM 2/3 parsing and generation based on instaparse
• updated docstrings
• updated the tutorial

Release 0.15.0

Changelog

• extracted topology namespace from hardware-optimization
  • differenciated between coupling and topology
  • added coupling-for-topology and all-to-all-coupling
• qubit and gate optimizations throw an exception when the optimization leads to an empty circuit
• hardware simulator creates a failed job on optimization failures
• activated hardware optimizations in hardware simulator
• removed create-noisy-simulator, use create-hardware-simulator
• integrated trajectory-state pipeline with result extraction to hardware simulator
• extracted common framework for variational algorithms
• improved VQE/QAOA optimization and integrated result extraction
• added standard gate library import to generated QASM3
• shortened some spec names by removing the quantum prefix
• renamed math.core namespace to math.complex-linear-algebra
• restructured and enhanced the tutorial
• registered project with zenodo.org for DOI generation
  • makes qclojure releases citeable in papers