Does photon energy apply to excitation timescales shorter than one second?

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Maurice Morelock
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Is electronic excitation caused by a single wave or multiple waves in a given time period?
Energy is equal to Planck’s constant times the number of waves in 1 sec. The time scale for electronic excitation is far shorter then one second. So when we talk about the excitation of an electron from a lower level to a higher level occurring at a certain energy, are we talking about the exciting photon as a single wave with the amplitude equal to the number of waves in one sec?
 
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Maurice Morelock said:
Summary:: Is electronic excitation caused by a single wave or multiple waves in a given time period?

Energy is equal to Planck’s constant times the number of waves in 1 sec. The time scale for electronic excitation is far shorter then one second. So when we talk about the excitation of an electron from a lower level to a higher level occurring at a certain energy, are we talking about the exciting photon as a single wave with the amplitude equal to the number of waves in one sec?
A full description of the excitation of an atom by a photon requires an analysis using QFT and, in particular, the quantization of the EM field.

https://en.wikipedia.org/wiki/Quantization_of_the_electromagnetic_field

The simplest description using only QM has a single photon of precisely the correct energy being absorbed by the atom and then a photon of the same energy being subsequently emitted. This is, however, not the whole story.