Yes. Thanks for the clarification. Carver specified the exponential behavior toward steady state, furthering the impression that he was talking about something more than a thought experiment.. Perhaps he was relying on the linearity of the governing equations to make that prediction...
Let me quote directly from the source (p. 80, "Collective Electrodynamics", Carver Mead, 2000 MIT ed.)
4.4 Radiation Damping
In our investigation of radiative coupling, we use a superconduct-
ing resonator as a model system. The resonator is a coherent quan-
tum system, interacting within...
Here is my answer. Add any clarifications you might have..
Since the photon is a wave, the answer is similar to the answer to the question, "What is the size of a wave?" The size of a photon depends on how precisely you know the photon's momentum, or equivalently, by deBroglie's relations, how...
Carver Mead writes in his book, "Collective Electrodynamics", that experimental evidence indicates a superconducting ring and capacitor resonator circuit will increase from zero voltage (scalar potential difference) to an energy matching a 3 degree Kelvin black body radiation spectrum...