Year: 2025
Type: article
Abstract: Achieving both reconfigurability and stable output signals is a critical challenge in the development of integrated photonic circuits for large-scale optical quantum information processing. This has led to the creation of multimode photonic processors, also known as reconfigurable multimode interferometers, which have wide-ranging applications in quantum and classical information processing. However, maintaining phase stability in multiport input signals remains a significant hurdle, particularly due to the phase instabilities introduced by active cooling systems and temperature drifts in the photonic processor. In this study, we propose theoretical models to simulate phase instability in photonic processors and validate them against experimental results. Two distinct modeling approaches were employed: a Brownian random walk and phase reconstruction based on experimentally observed oscillating harmonics. Additionally, we verified and applied our model to a specific application for input phase correction using self-feedback control within the photonic processor.
Source: Applied Optics
DOI: 10.1364/ao.560370
Language: English
Topic: Photonic and Optical Devices
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Awards: G1305463392, Verbundprojekt: Quanten Drahtloses Campusnetzwerk - QD-CamNetz - , Teilvorhaben: TP-Boche: Quantenklassische Verbindungen, TP-Deppe: Quantenklassischen Verbindungsschicht Protokolle, TP-Nötzel: Quantenklassiche Simulations/Emulations-Plattform, Verbundprojekt: Digitale Transformation und Souveränität künftiger Kommunikationsnetze - 6G-life -, Teilvorhaben: Grundlagen und Systemlösungen für Post Shannon Kommunikation, In-Network Computing, eingebettete Sicherheit und Resilienz, G3690431148, G5018688533, G5519890835, G6984449769, G7472567491, Verbundprojekt: Resilienz für das Quanten-Internet - Q-TREX -
OpenAlex ID: W4409450041