All-optical tomography measures photon statistics of squeezed vacuum in nanophotonic circuits, indicating feasibility for advanced quantum optics.
We demonstrate ultrafast all-optical tomography of squeezed vacuum. Using a dispersion-engineered nanophotonic parametric amplifier, we amplify 2.5 dB squeezed vacuum encoded in ultra-short pulses and measure their photon statistics to calculate the Wigner function.
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Williams et al. (2025) studied this question.
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