Quantum Mechanics IV: Photons, Interferometers, and Optical Qubits Step by Step

A lightweight execution-visualization book.

Photon Energy and Detector Counts

Beam Splitters as Path Ledgers

Mach-Zehnder Phase Interference

Optical Qubits and a Source-Checked Audit

Photonic Hardware Cross Scans

Photonic Boundary Depth Scans