Abstract
An example of coding a source of quantum states with a finite frequency band W and finite exit power not exceeding ∼(ℏW)W is given. The number of classical information bits that can be coded in the quantum states generated by such a source per unit time is C=W. Such a source is minimal in the sense that the filling factor for each of the orthogonal single-particle modes constituting N=WT-photon vector in time window 2T is equal to 1. This result can be treated as a quantum analogue of the Kotel’nikov theorem on sampling for classical signals
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