Programmable quantum circuits in a large-scale photonic waveguide array
arxiv(2024)
摘要
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× 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±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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