## TODO

### Noise Channels & Open Quantum System Modelling
* Depolarising channel
* Amplitude damping
* Phase damping
* Thermal relaxation (T<sub>1</sub>/$T_2$)
* Readout noise
* Kraus operator framework
* Pauli / Lindblad evolution engine
* Stabiliser noise models

### Density Matrix Backend
* Optimised density matrix propagation
* Hybrid wave-function / density-matrix simulation modes

### GPU Offload, Caching & Scheduling
* State caching on GPU
* Tensored simulation on device
* Batched execution engine
* Device-side gate fusion

### Tensor Network Simulation Backend
* Tensor slicing
* Contraction ordering
* Edge-cut optimisation

### Analogue Evolution
* Suzuki–Trotter time-evolution models