Quantsim v0.2.1: Verified Gates and UI Improvements, added MOVE gate

Quantsim v0.2.1

This release focuses on gate correctness, clearer semantics, and a more polished UI for learning and experimentation.

Highlights

• Fixed parametric gate semantics and added verification tests
• Corrected Rz(theta) to match the standard physics convention
• Fixed controlled pow-gate behavior so exponent semantics are consistent with full-gate expectations
• Separated physical rotation semantics (Rx, Ry, Rz in radians) from Cirq-style exponent gates (XPow, YPow, ZPow, CXPow, CYPow, CZPow)
• Added stronger gate documentation and in-app semantic descriptions
• Improved the gate editor layout and Bloch sphere visualization
• Reworked Bloch preview logic to use a local density-matrix view for actual incoming states
• Added a logical MOVE gate as a state-transfer abstraction
• Fixed theme behavior so light mode is actually light mode again
• Refreshed the web deploy flow so the GitHub Pages WASM build is easier to keep current

Core changes

• Added focused verification tests for:
  • Rx, Ry, Rz actions on basis states
  • inverse/composition behavior
  • controlled phase behavior
  • pow-gate interface semantics
• Corrected Rz(theta) to:
  • diag(exp(-i theta / 2), exp(+i theta / 2))
• Clarified and preserved the distinction between:
  • physical rotations in radians
  • exponent/pow gates with Cirq-style semantics
• Added a logical MOVE gate with explicit documentation that it is not a calibrated physical Jaynes-Cummings MOVE pulse

UI improvements

• Gate editor now shows richer semantic context:
  • matrix form
  • parameter meaning
  • action on basis states
  • convention notes
• Improved gate editor layout for better use of horizontal space
• Bloch sphere panel now presents:
  • cleaner visuals
  • state coordinates
  • density-matrix based local-state preview
  • purity information for mixed/entangled local states
• Improved circuit-grid contrast, especially in light mode
• Updated welcome screen wording and tutorial text for better consistency with the current app

Web / release tooling

• Updated versioning to 0.2.1
• Improved deploy-web.sh to:
  • rebuild and sync fresh web artifacts into docs/
  • avoid stale JS/WASM leftovers
  • rewrite GitHub Pages paths correctly
  • work around NO_COLOR=1 issues during trunk build

Notes

• MOVE is currently a logical state-transfer gate with the same unitary action as the logical exchange of |01> and |10>.
• It is included for workflow clarity and documentation, not as a physical pulse-level hardware model.

v0.2.0 - Quantum Algorithm Simulator Modular Architecture Release

Summary

This is the v0.2.0 "Modular Architecture" release of the Quantum Algorithm Simulator, a Rust-based interactive sandbox for exploring and visualizing quantum algorithms in the browser. This release represents a significant architectural improvement that makes the simulator more maintainable, extensible, and ready for future enhancements.

What's New

Modular Crate Structure

• Restructured into Cargo Workspace: The project is now organized as a proper Cargo workspace with separate crates for core functionality and UI
• quantsim_core Crate: Contains all the quantum simulation engine logic, making it reusable for other projects
• quantsim_ui Crate: Houses the Egui-based web interface, cleanly separated from core logic

Enhanced Gate Implementations

• Fixed Controlled Power Gates: Corrected implementations of CZPowGate and CYPowGate to properly create controlled versions of their target gates
• Systematic Gate Testing: Added comprehensive tests that iterate through all registered gates to ensure they can be built and simulated without panicking
• Improved Test Assertions: Enhanced gate tests with more specific error messages to clearly indicate which gate failed

Updated Documentation

• New Modular READMEs: Each crate now has its own detailed README with usage examples and architecture overview
• Enhanced Tutorials: Updated Markdown-based tutorials with new figures and clearer explanations
• Gate Reference: Comprehensive documentation of all available quantum gates

Improved Development Workflow

• Better Dependency Management: Crates now properly reference each other as dependencies rather than using workspace references
• Embedded Circuit Templates: Circuit templates are now embedded directly in the core crate using include_dir, eliminating file path dependencies
• Comprehensive Testing: All tests pass, ensuring the stability of both core and UI components

What's Included

Web Browser App

A fully playable web browser app at:
https://benschneider.github.io/quantum_algorithm_simulator/

Interactive visualizations of:

• State vectors
• Single-qubit and multi-qubit gates
• Entanglement and interference dynamics

Guided Learning

• Markdown-based tutorials to step through quantum computing concepts visually
• Comprehensive gate reference documentation
• Example circuits demonstrating key quantum algorithms

Why You Might Like It

• Modular Design: Clean separation of concerns makes it easier to understand and extend
• Reusable Core: The simulation engine can now be used independently in other projects
• Built for Exploration: Developed in Rust with multi-thread and sparse-matrix foundations for future performance
• Visual-First Approach: Designed to open dialogue and visualize complex quantum behavior in an approachable way

What I'm Still Working On

• Supporting multi-qubit state visualization (e.g., 4-qubit and beyond) in a way that's both comprehensible and meaningful
• Incorporating feedback from early learners, educators, and quantum-curious developers
• Adding more quantum algorithms and examples

How You Can Contribute or Help

• Try it out and share what surprised you or confused you
• Drop ideas on visualizations or tutorials
• Star the repo to track progress
• Contribute to the core library or UI components

Let's demystify quantum algorithms together-one pulse, one vector, one line of Rust at a time.

Enjoy, and thanks for being part of this learning journey!

v0.1.0 - First Interactive Web Preview of Quantum Algorithm Simulator

Summary

This is the v0.1.0 "Preview Release" of my Quantum Algorithm Simulator - a small interactive sandbox built in Rust (Wasm) to explore and visualize the magic of quantum algorithms.

While it's still early, the following features are now live:

What's Included (Wasm Frontend + Docs)

• A fully playable web browser app at:
  https://benschneider.github.io/quantum_algorithm_simulator/
• Interactive visualizations of:
  • State vectors
  • Single-qubit and multi-qubit gates
  • Entanglement and interference dynamics
• A guided Markdown-based tutorial to step through concepts visually
• Frontend only-Rust source code will be published soon after further refining and documentation

Why You Might Like It

• Built for exploration and intuition, not full-feature parity with matured frameworks (like Cirq or Qiskit)
• Developed in Rust with multi-thread and sparse-matrix foundations for future performance
• Designed to open dialogue-visualize complex quantum behavior in an approachable, visual-first way

What I'm Still Working On

• Supporting multi-qubit state visualization (e.g., 4-qubit and beyond) in a way that's both comprehensible and meaningful
• Completing and polishing the full Rust backend and pushing it to GitHub
• Incorporating feedback from early learners, educators, and quantum-curious developers

---

I'd be incredibly grateful for your feedback, ideas, or suggestions! Whether it's UI tweaks, better visuals, new learning paths, or cool use cases-this is Version 0.1, and I'm eager to iterate with your input.

How You Can Contribute or Help

• Try it out and share what surprised you or confused you
• Drop ideas on visualizations or tutorials
• Star the repo to track progress or contribute when the backend goes live

Let's demystify quantum algorithms together-one pulse, one vector, one line of Rust at a time.

Enjoy, and thanks for being part of this learning journey!