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arXiv · 2408.11590

Losses resistant verification of quantum non-Gaussian photon statistics

Riccardo Checchinato·Jan-Heinrich Littmann·Lukáš Lachman·Jaewon Lee·Sven Höfling·Christian Schneider·Radim Filip·Ana Predojević
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Abstract

Quantum non-Gaussian states of light have fundamental properties that are essential for a multitude of applications in quantum technology. However, many of these features are difficult to detect using standard criteria due to optical losses and detector inefficiency. As the statistics of light are unknown, the loss correction on the data is unreliable, despite the fact that the losses can be precisely measured. To address this issue, we employ a loss-mitigated verification technique utilising quantum non-Gaussian witnesses, which incorporate the known optical losses and detector inefficiency into their derivation. This approach allows us to address the considerable challenge of experimentally demonstrating unheralded quantum non-Gaussian states of single photons and photon pairs.

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Riccardo Checchinato, Jan-Heinrich Littmann, Lukáš Lachman, Jaewon Lee, Sven Höfling, Christian Schneider, Radim Filip, Ana Predojević. 2024-08-21. Losses resistant verification of quantum non-Gaussian photon statistics. https://arxiv.org/abs/2408.11590

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