given an AC field, how many photons are there?
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Say you are applying a time varying potential across double quantum dots in the form of VacVaccos(2πft2πft). We know that each photon has an energy Ephoton=hfEphoton=hf.
Is it correct to say that the number of photons from the oscillating field is eVac/hfeVac/hf ?
I suppose the question above is ill-defined, in the sense that one should ask "the number of photons per unit area per second," which is given by PAhfPAhf, where P is power and A is the area over which the field is being applied
Without the quantum dot context, in the caption, a positive n corresponds to the absorption of n photons. I found it odd that J21J12 peaks at α=eVac/hf=2α=eVac/hf=2 as opposed to 1. It seems odd that all J2nJn2 is shifted to the right by 1 for n>0n>0.
Is it correct to say that the number of photons from the oscillating field is eVac/hfeVac/hf ?
I suppose the question above is ill-defined, in the sense that one should ask "the number of photons per unit area per second," which is given by PAhfPAhf, where P is power and A is the area over which the field is being applied
Without the quantum dot context, in the caption, a positive n corresponds to the absorption of n photons. I found it odd that J21J12 peaks at α=eVac/hf=2α=eVac/hf=2 as opposed to 1. It seems odd that all J2nJn2 is shifted to the right by 1 for n>0n>0.
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energy difference between left and right dots, when hfhf or some integer multiple of it matches the energy difference, then you get photon-assisted tunneling. So I thought the plot of the peaks of the Bessel functions squared basically tells you at what VacVac does the energy difference match some integer times the energy of a single photon. For example, the peak position of J21J12 tells me that the probability of the energy transition from E to E+hf is maximized when it absorbs 2 photons. (because J21J12 hits its maximum at α=2α=2)
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