Coherent superpositions of "optical wave fields" include holography. Since eddies coexist as spatial superpositions, a coherent structure is not an eddy. Superpose is able to calculate both pairwise and multiple structure superpositions. The two combinations have identical quantum numbers, and hence they are only found in superpositions. The superpositions of inward and outward wave pairs produce the "static" fields (or scalar potential). Thus, einselection precludes stable existence of pure superpositions of pointer states. This space can also be regarded as consisting of linear superpositions of classical bit strings. The emerging beam then contains different linear superpositions of the and . The ensemble interpretation states that superpositions are nothing but subensembles of a larger statistical ensemble. In 1979 he wrote, in collaboration with French philosopher Gilles Deleuze, the essay "Superpositions". Superpositions of quantum states can be easily represented, encrypted, transmitted and detected using photons. It is the result of four successive superpositions, the first two from the Classic period.