Hybrid Photonic Integrated Circuits for Quantum Communications

Compact, high-performance hybrid photonic integrated circuits (PICs) are crucial for advancing Quantum Communications. This paper presents recent examples from the PolyBoard platform, including a time-bin interferometer, a DV-QKD transmitter, and a heralded single photon source. Keywords: Quantum communication and quantum cryptography, Photonic integration, Photonic integrated circuits, Planar lightwave circuits (PLCs), Photonic quantum communication, Single-photon and quantum entangled photon-pair sources.