A random sampling estimator for matrix permanents reduces the sample count for free-boson entanglement entropy from about 2^N to about 2^(0.2N), enabling dynamics for systems of order 100 sites.
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Entanglement entropy dynamics of non-Gaussian states in free boson systems: Random sampling approach
A random sampling estimator for matrix permanents reduces the sample count for free-boson entanglement entropy from about 2^N to about 2^(0.2N), enabling dynamics for systems of order 100 sites.