Скачать или смотреть Quantum: Low-Loss Connections to Optical Fibers for Quantum Photonic Integrated Circuits

Presented by Ryan Vallance (Senko Advanced Components)

We report on the development of new, low-loss, fiber-optic connections for quantum photonic integrated circuits (QPICs). The connectors are constructed from metallic optical benches that hold arrays of single-mode optical fibers, and they couple light to/from QPICs via reflective, freeform mirrors. They are compatible with multiple PIC platforms, including silicon-on-insulator and silicon nitride. Because they are metallic, they can be used over a large temperature ranges including operation at cryogenic temperatures. This paper considers the opto-mechanical design of the connectors for vertical coupling using diffractive grating couplers. Low losses are obtained despite misalignment using expanded-beam optical paths. These connectors can enable the transition from free-space optics to integrated photonics using QPICs in emerging quantum computing, communications, and sensing.