Workshop LPI RAS, Branch in Troitsk 05.03.24.

Speaker: Vadim V. Kovaluk
Topic: Photonic integrated circuits for optical calculations, communications, and sensors
Abstract: The talk is dedicated to reviewing hybrid elements of integrated optics that developed and manufactured in the laboratory of quantum detectors at MPSU and the laboratory of photon gas sensors at MISIS, that covering a 10-year period. The first part of the talk we will focus on the main principles of developing and creating hybrid photonic integrated circuits. In the second part we will discuss photonic integrated circuits made to operate at room temperature, including devices made from silicon nitride, thin-film lithium niobate on insulator, methods of integration with nanotubes, phase-change materials, and 3D optical interconnects based on two-photon polymerization. We will give special attention to photonic integrated circuits with microfluidic channels, allowing for high sensitivities, low detection limits at low concentrations of the required analyte (liquid and gas). To increase selectivity, there is considered a method of surface functionalization with DARPins for working with extracellular vesicles (exosomes) with high potential for quick and early diagnosis of cancer. In the third part of the talk we will discuss photonic integrated circuits with superconducting single-photon detectors, which are promising for creating devices with record characteristics (single-photon spectrometer, heterodyne receiver, quantum key distribution receiver) as well as for implementing a fully scalable quantum computer based on photons and ions.