Version 5.4.0

This release introduces the Quantum Circuit Editor, a visual drag-and-drop interface for building quantum circuits directly in the Web Modeling Editor, along with Qiskit code generation capabilities.

New Features and Improvements

Quantum Circuit Editor

  • Added a new Quantum Circuit Editor component to the Web Modeling Editor, enabling users to visually design quantum circuits using a drag-and-drop interface.

  • Implemented a comprehensive gate palette with support for:

    • Single-qubit gates: Hadamard (H), Pauli-X/Y/Z, S, T, and parametric rotation gates (RX, RY, RZ, Phase)

    • Multi-qubit gates: CNOT, SWAP, Toffoli (CCX), Fredkin (CSWAP), and controlled versions of single-qubit gates

    • Measurement operations: Standard measurement and post-selection

    • Special gates: QFT, barriers, spacers, and custom user-defined gates

  • Added nested circuit support allowing users to create reusable gate definitions and composite operations.

  • Implemented undo/redo functionality with keyboard shortcuts (Ctrl+Z / Ctrl+Y) for circuit editing.

  • Added circuit persistence with automatic saving to the project storage.

  • Introduced example templates (Bell State, GHZ State, Quantum Teleportation, Grover’s Algorithm, Bernstein-Vazirani) accessible from the gate palette.

  • Implemented minimum qubit validation ensuring circuits have the required number of qubits for selected gates.

  • Added measurement blocking that prevents placing gates after measurement operations on the same qubit.

Qiskit Code Generator

  • Added a new Qiskit code generator that converts visual quantum circuits to executable Python code using the Qiskit framework.

  • Implemented support for configurable backend options:

    • Aer Simulator for local simulation

    • Fake Backend for testing

    • IBM Quantum for real quantum hardware execution

  • Added configurable shot count for quantum circuit execution.

  • Integrated the Qiskit generator into the Web Modeling Editor’s Generate menu for seamless code export.

Quantum Metamodel

  • Extended the B-UML metamodel with comprehensive quantum circuit primitives including:

    • QuantumCircuit, QuantumRegister, and ClassicalRegister classes

    • Gate classes for all supported quantum operations

    • Support for parameterized gates with angle specifications

    • Control state definitions for multi-qubit controlled operations

Web Modeling Editor

  • Added Quantum Circuit as a new diagram type in the sidebar navigation.

  • Integrated the quantum editor route (/quantum-editor) into the application routing.

  • Extended project types to support QuantumCircuitDiagram alongside existing UML diagram types.

  • Added automatic diagram type detection for proper menu rendering in the quantum editor context.

Fixes