Programmable quantum circuits in a large-scale photonic waveguide array

• URL: http://arxiv.org/abs/2405.13654v1
• Date: Wed, 22 May 2024 13:59:32 GMT
• Title: Programmable quantum circuits in a large-scale photonic waveguide array
• Authors: Yang Yang, Robert J. Chapman, Akram Youssry, Ben Haylock, Francesco Lenzini, Mirko Lobino, Alberto Peruzzo,
• Abstract summary: We show the first demonstration of precise control of single photon states on an $11times 11$ continuously-coupled programmable waveguide array. Our results demonstrate the potential of using this technology as a building block for quantum information processing applications.
• Score: 2.784440641237062
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Over the past decade, integrated quantum photonic technologies have shown great potential as a platform for studying quantum phenomena and realizing large-scale quantum information processing. Recently, there have been proposals for utilizing waveguide lattices to implement quantum gates, providing a more compact and robust solution compared to discrete implementation with directional couplers and phase shifters. We report on the first demonstration of precise control of single photon states on an $11\times 11$ continuously-coupled programmable waveguide array. Through electro-optical control, the array is subdivided into decoupled subcircuits and the degree of on-chip quantum interference can be tuned with a maximum visibility of 0.962$\pm$0.013. Furthermore, we show simultaneous control of two subcircuits on a single device. Our results demonstrate the potential of using this technology as a building block for quantum information processing applications.

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