Quantum mechanical photon-count formula derived by entangled state representation
arXiv:1010.5555 · doi:10.1088/1674-1056/20/8/084203
Abstract
By introducing the thermo entangled state representation, we derived four new photocount distribution formulas for a given density operator of light field. It is shown that these new formulas, which is convenient to calculate the photocount, can be expressed as such integrations over Laguree-Gaussian function with characteristic function, Wigner function, Q-function, and P-function, respectively.
5 pages, no figure