Exceptional points in mechanically coupled gain-loss oscillators induce steady quantum phase synchronization and bipartite Gaussian entanglement above a critical driving power in the weak coupling regime.
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Convex optimization formulations and an analytical symplectic trace expression are introduced to reconstruct physical Gaussian covariance matrices and witness genuine multipartite entanglement from experimental data.
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Exceptional point induced quantum phase synchronization and entanglement dynamics in mechanically coupled gain-loss oscillators
Exceptional points in mechanically coupled gain-loss oscillators induce steady quantum phase synchronization and bipartite Gaussian entanglement above a critical driving power in the weak coupling regime.
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Revisiting Gaussian genuine entanglement witnesses with modern software
Convex optimization formulations and an analytical symplectic trace expression are introduced to reconstruct physical Gaussian covariance matrices and witness genuine multipartite entanglement from experimental data.