Feature release 0.9.0

Added

• QGymMapper mapper pass
• U(theta, phi, lambda) gate to default single-qubit gates
• Z90 and mZ90 pi-half rotation gates (equivalent to S and Sdag gates)
• Operation duration in terms of execution cycles can be specified for the QuantifySchedulerExporter
• measurement_to_bit_map property added to the Circuit class

Changed

• Circuit.export expects an Exporter instance as input argument (instead of an ExportFormat)
• Moved Bloch sphere rotation composition from the merger pass interface to Bloch sphere rotation semantic module
• Refactor gate semantics as attributes of gates

Removed

• The QuantifySchedulerExporter no longer returns a bit_register_mapping
  (use Circuit.measurement_to_bit_map property instead), it only returns a quantify-scheduler Schedule
• The ExportFormat has been deprecated
  (exporters can be specified by providing an instance as input argument to Circuit.export)

Feature release 0.8.0

Added

• Processing of control instructions (Barrier, Wait) added to quantify-scheduler exporter

Changed

• Refactor of visitor functionality of IR components and implementations
• Improved SWAP placement and refactor of common functionalities in existing router passes

Feature release 0.7.0

Added

• Support for Python 3.13 added.

Removed

• Support for Python 3.9 dropped.

Bug fix release 0.6.1

Added

• instruction_count property to Circuit

Fixed

• Autocompletion for CircuitBuilder gates
• Re-mapper properly handles remapping of target qubits

Feature release 0.6.0

Added

• MIPMapper mapper pass
• OpenSquirrel's __version__ attribute exposed

Changed

• RoutingValidator changed to InteractionValidator

Fixed

• ShortestPathRouter and AStarRouter now correctly propagate SWAP gate insertion effects throughout the circuit
• The values for parameters theta and phi stay within the domain (-pi, pi] throughout parse- and compile-time
  (note: gate modifiers have precedence over normalization)
• Mapping of the target qubits of controlled gates

Feature release 0.5.0

Added

• asm_filter method to the Circuit class to filter-out assembly declarations by backend name

Changed

• Default gate identification check refactored (now including check for phase)
• McKayDecomposer checks X90 on BSR semantic instead of name

Fixed

• RoutingValidator ignores assembly declarations

Feature release 0.4.0

Added

• Assembly declaration
• Rn unitary instruction
• SWAP2CZDecomposer decomposer pass
• CZDecomposer decomposer pass
• ShortestPathRouter router pass
• RandomMapper mapper pass
• AStarRouter router pass

Changed

• libQASM 1.1.0 integrated (updated from 0.6.9)
• Refactor: removed generators
• Changed the RoutingChecker pass to a RoutingValidator pass
• Changed use of native to primitive, e.g. NativeGateValidator is now PrimitiveGateValidator
• Compilation passes accept kwargs as input

Bug fix release 0.3.1

Fixed

• Bug in the writing of SWAP instructions

Feature release 0.3.0

Added

• NativeGateValidator validator pass

Changed

• Relaxed NumPy version requirement to >=1.26 for all supported Python versions

Fixed

• Fixed order of merging Bloch sphere rotations

Feature release 0.2.0

Added

• init non-unitary instruction
• SWAP two-qubit unitary instruction
• barrier and wait control instructions
• SingleQubitGatesMerger merger pass
• SWAP2CNOTDecomposer decomposer pass
• CNOT2CZDecomposer decomposer pass
• RoutingCheckerrouting pass
• Restore barrier groups in cQASMv1 Exporter

Changed

• Importing modules, classes, and functionalities simplified
• merge_single_qubit_gates method of Circuit class,
  changed to general merge method that accepts custom merger passes
• libQASM 0.6.9 integrated (updated from 0.6.7)
• Refactor: code base adheres to the PEP8 style guide
• Refactor: instruction library simplified
• Refactor: comment nodes removed from IR

Fixed

• Bug in ABA-decomposer
• Bug in McKay-decomposer (all single-qubit Clifford gates are verified)