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We uncover emergent universality arising in the equilibration dynamics of multimode continuous-variable systems. Specifically, we study the ensemble of pure states supported on a small subsystem of a few modes, generated by Gaussian measurements on the remaining modes of a globally pure bosonic Gaussian state. We find that beginning from highly entangled, complex global states, such as random Gaussian states and product squeezed states coupled via a deep array of linear optical elements, the induced ensemble attains a universal form, independent of the choice of measurement basis: it is composed of unsqueezed coherent states whose displacements are distributed normally and isotropically, with variance depending on only the particle-number density of the system.

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Physical literacy among chinese elementary school students: the mediating role of physical knowledge and physical competency.

BMC Public Health

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School of Health Management Policy, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 46 Xizongbu Hutong, Dongcheng District, Beijing, 100730, People's Republic of China.

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