Photonic Integrated Circuit (PIC)
Chip containing electronic components that form a functional circuit, such as those embedded inside your smart phone, computer, and other electronic devices; a photonic integrated circuit (PIC) is a chip that contains photonic components, which are components that work with light (photons).
What is a photonic integrated circuit?

Coherent transmitter for continuous-variable quantum key distribution (CV-QKD) (source: ICFO)