  Mode-entanglement based criteria and measures become insufficient for
broadband emission, e.g. from spasers (plasmonic nano-lasers). We introduce
criteria and measures for the (i) total entanglement of two wavepackets, (ii)
entanglement of a wavepacket with an ensemble and (iii) total nonclassicality
of a wavepacket~(WP). We discuss these criteria in the context of (i)
entanglement of two WPs emitted from two initially entangled cavities (or two
initially entangled atoms) and (ii) entanglement of an emitted WP with the
ensemble/atom for the spontaneous emission and the single-photon superradiance.
We also show that, (iii) when the two constituent modes of a WP are entangled,
this creates nonclassicality in the WP as a noise reduction below the standard
quantum limit. The criteria we introduce are, all, compatible with near-field
detectors.
