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On the covariance matrix for Gaussian states
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We show the explicit expression for the covariance matrix of general Gaussian states in terms of the symplectic group matrices. We discuss how the criteria to characterize squeezing and entanglement using the covariance matrix give rise to new criteria in the symplectic matrix elements used to construct the general Gaussian states.
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Cited by 1 Pith paper
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Gaussian Models to Non-Gaussian Realms of Quantum Photonic Simulators
A review of photonic quantum simulators, their Gaussian and non-Gaussian capabilities, and the computational techniques needed to scale them.
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