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arXiv · 2307.05031

Compressive single-pixel read-out of single-photon quantum walks on a polymer photonic chip

Aveek Chandra·Shuin Jian Wu·Angelina Frank·James A. Grieve
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Abstract

Quantum photonic devices operating in the single photon regime require the detection and characterization of quantum states of light. Chip-scale, waveguide-based devices are a key enabling technology for increasing the scale and complexity of such systems. Collecting single photons from multiple outputs at the end-face of such a chip is a core task that is frequently non-trivial, especially when output ports are densely spaced. We demonstrate a novel, inexpensive method to efficiently image and route individual output modes of a polymer photonic chip, where single photons undergo a quantum walk. The method makes use of single-pixel imaging (SPI) with a digital micromirror device (DMD). By implementing a series of masks on the DMD and collecting the reflected signal into single-photon detectors, the spatial distribution of the single photons can be reconstructed with high accuracy. We also demonstrate the feasibility of optimization strategies based on compressive sensing.

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Aveek Chandra, Shuin Jian Wu, Angelina Frank, James A. Grieve. 2023-07-11. Compressive single-pixel read-out of single-photon quantum walks on a polymer photonic chip. https://doi.org/10.1109/jphot.2023.3281830

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