QuanEstimation Education

An educational web application demonstrating quantum parameter estimation techniques, built on top of the QuanEstimation library.

Project Structure

.
├── src/
│   ├── main.py                  # FastAPI backend (API endpoints)
│   ├── quantum_estimation.py    # Core simulation and visualization routines
│   ├── index.html               # Frontend UI with interactive parameter controls
│   └── doc/                     # HTML documents explaining each module's principles
│       ├── 1.html               # Single Qubit Parameter Estimation
│       ├── 2.html               # Two Qubit Parameter Estimation
│       ├── 3.html               # Bayesian Quantum Parameter Estimation
│       ├── 4.html               # Bayesian vs. Maximum Likelihood Estimation
│       ├── 5.html               # Measurement Optimization
│       └── 6.html               # State Optimization of LMG Model
└── turorial/
    └── QuanEstimation_turorial_git.pdf   # Reference tutorial PDF

Dependencies

• Python 3.8+
• QuanEstimation
• QuTiP
• FastAPI + Uvicorn
• NumPy, SciPy, Matplotlib

Getting Started

cd src
uvicorn main:app --host 0.0.0.0 --port 8000

Then open http://localhost:8000 in your browser.

Modules

The web interface provides 6 interactive tabs:

Tab	Topic	Description
1	Single Qubit Parameter Estimation	CFI/QFI evolution under Lindblad dissipation
2	Two Qubit Parameter Estimation	CFIM, QFIM, HCRB, and NHB bounds for two-qubit systems
3	Bayesian Quantum Parameter Estimation	Prior distribution and Bloch vector Z-component analysis
4	Bayesian vs. MLE	Posterior distribution (MAP) and likelihood function (MLE) comparison
5	Measurement Optimization	Projection, LC input, and rotation input measurement optimization
6	State Optimization	QFI convergence and optimal state distribution for the LMG model

API Endpoints

Endpoint	Module
/createImg	Tab 1: Single Qubit
/createImgQuantum	Tab 2: Two Qubit
/createImgBayesian	Tab 3: Bayesian
/createImgQuantumParameter	Tab 4: MAP vs MLE
/createImgProjection	Tab 5-1: Projection Measurement
/createImgLCInput	Tab 5-2: LC Input Measurement
/createImgRotationInput	Tab 5-3: Rotation Input Measurement
/createImgStateOpt	Tab 6: State Optimization

References

• QuanEstimation Documentation
• QuTiP Documentation