Gaussian Boson Sampling (GBS) is a protocol developed by Hamilton et al. in 2017 that uses single mode squeezed states (SMSS) as a nonclassical resource with outputs patterns in the photon number basis .
 Hamilton, et al., “Gaussian Boson Sampling”, Physical Review Letters, 2017
 Quesada, et al., “Gaussian boson sampling using threshold detectors”, Physical Review, 2018
 Zhong, et al., “Quantum computational advantage using photons”, Science, 2020