v0.2.0

Added

• TICK Command: Time slice boundary marker for temporal scheduling in MBQC patterns

  • Added TICK command type to mark boundaries between time slices
  • Integrated TICK command handling in PatternSimulator
  • Integrated TICK command processing in Stim compiler

• Edge Scheduler: Automatic entanglement operation scheduling based on node preparation times (#99)

  • Added entangle_time attribute to Scheduler for tracking entanglement operation timing
  • Added auto_schedule_entanglement() method to automatically schedule CZ gates when both nodes are prepared
  • Extended the timeline property to include entanglement operations
  • Added entanglement time validation in schedule validation
  • Added compress_schedule() function to support entanglement time compression

• Pattern: Added the depth attribute into Pattern, which represents the depth of parallel execution.

• Pattern: Added pattern resource/throughput metrics (active_volume, volume, idle_times, throughput).

• Scheduler Integration: Enhanced qompile() to support temporal scheduling with TICK commands

  • Added scheduler parameter to qompile() for custom scheduling
  • Automatically inserts TICK commands between time slices

• Examples: Added entanglement_scheduling_demo.py demonstrating edge scheduler features

• Feedforward Optimization: Added a signal_shifting method as a feedforward optimization.

  • This optimization is equivalent to the operation of the same name in the measurement calculus, and makes the measurement pattern as parallel as possible.
  • The optimization is now self-contained within the feedforward module.

• Feedforward Optimization: Added pauli_simplification() to remove redundant Pauli corrections in correction maps when measuring in Pauli bases.

Changed

• Pattern: Updated command sequence generation to support TICK commands
• Command: Extended Command type alias to include TICK
• The default strategy of Scheduler.solve_schedule is now MINIMIZE_TIME instead of MINIMIZE_SPACE for the compilation performance.

Fixed

• Scheduler: Accept entangle_time edges in either order in Scheduler.manual_schedule().

Tests

• Stim Compiler: Add coverage that manual entangle_time determines CZ time slices in both Pattern and Stim output.