PoAPL
Polar Angle Prediction Layer
A **trainable layer** that encodes feature vectors onto 2 rotational coordinates $R_y(\theta),R_z(\gamma)$ for a unit sphere. *Used to map data onto the Bloch Sphere surface for qubits*
Quantum Polar Metric Learning: Efficient Classically Learned Quantum Embeddings
https://paperswithcode.com/paper/quantum-polar-metric-learning-efficient
Quantum Polar Metric Learning: Efficient Classically Learned Quantum Embeddings