A photon polarization state for a photon propagating in the z direction is given by 1)=x+x)....

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A photon polarization state for a photon propagating in the z direction is given by 1)=x+x). ly). where I |x) = -2 (1,-) + 1x, +)) ly) = (1x.-) - 1k.+)) are linear polarizations for a photon of wave vector k = kz. (a) A beam carrying N photons per second, each in state ), is totally absorbed by a black disk with the normal to its surface in the z direction. How large is the torque on the disk and in which direction does the disk rotate? (b) How would the result change if the polarization was 18) = 3 -=IX) + 2/1Y) ly) instead? Discuss. A photon polarization state for a photon propagating in the z direction is given by 1)=x+x). ly). where I |x) = -2 (1,-) + 1x, +)) ly) = (1x.-) - 1k.+)) are linear polarizations for a photon of wave vector k = kz. (a) A beam carrying N photons per second, each in state ), is totally absorbed by a black disk with the normal to its surface in the z direction. How large is the torque on the disk and in which direction does the disk rotate? (b) How would the result change if the polarization was 18) = 3 -=IX) + 2/1Y) ly) instead? Discuss.

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