Toolbox for the design of LiNbO3-based passive and active integrated quantum circuits. (6th December 2017)

• Record Type: Journal Article
• Authors: Sharapova, P R; Luo, K H; Herrmann, H; Reichelt, M; Meier, T; Silberhorn, C
• Is Part Of: New journal of physics. Volume 19:Number 12(2017:Dec.)
• Publication Date: 2017-12-06
• Subjects: quantum optics -- integrated technologies -- quantum circuits -- quantum interferometer -- Hong–Ou–Mandel interference; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/aa9033
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: We present and discuss perspectives of current developments on advanced quantum optical circuits monolithically integrated in the lithium niobate platform. A set of basic components comprising photon pair sources based on parametric down conversion (PDC), passive routing elements and active electro-optically controllable switches and polarisation converters are building blocks of a toolbox which is the basis for a broad range of diverse quantum circuits. We review the state-of-the-art of these components and provide models that properly describe their performance in quantum circuits. As an example for applications of these models we discuss design issues for a circuit providing on-chip two-photon interference. The circuit comprises a PDC section for photon pair generation followed by an actively controllable modified mach–Zehnder structure for observing Hong–Ou–Mandel interference. The performance of such a chip is simulated theoretically by taking even imperfections of the properties of the individual components into account.