superradiance
/ˈsuːpəreɪdɪəns/ /ˈsjuːpəreɪdɪəns/Physics
noun
The collective emission of coherent radiation by a system of excited atoms or ions, especially as a result of the correlation of excited atomic states by an external macroscopic polarization.
Origin
1950s; earliest use found in Journal of Applied Physics. From super- + radiance.
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