Polarization Beam-Splitter Photon Combiner

This simulator renders a polarizing beam-splitter (PBS) quantum-channel combiner in 3D: two orthogonally-polarized photon streams — horizontal on channel A, vertical on channel B — approach a beam-splitter cube from perpendicular directions and merge into a single combined output beam, exactly as a real PBS-based combiner does in a polarization-multiplexed quantum link. Misalignment sliders rotate each input's polarization away from its ideal axis and a crosstalk slider models real, non-ideal PBS hardware; both feed live Malus's-law extinction-ratio, combined-throughput and channel-fidelity readouts, while misrouted photons visibly peel off into the reject ports instead of joining the merged beam.