Dear all, If the light from far distant stars come to earth, the light intensity will be greatly reduced due to the long distance. Could we get single photon in this way? If so, when the light came to earth, its wavefront will be distorted by the turbulent atmosphere. Could we say single photon has aberrated wavefront rather than an ideal plane wave? And when we use stand Hartmann-Shack type wavefront sensor to "measure" the distorted wavefront, the whole wavefront will be sampled by many sub-apertures, however, in the photon view, it should collapse to a CCD detector behind one sub-aperture in a random way. Does this means it cannot get the wavefront in theory?
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