Quantum-mechanical P function for photons

Faculty Science Year: 2001
Type of Publication: Article Pages: 82-90
Authors:
Daoud, AS
Journal: PHYSICS ESSAYS PHYSICS ESSAYS PUBLICATION Volume: 14
Research Area: Physics ISSN ISI:000174030400011
Keywords : quantum-mechanical P function, quantum weight function for photons, quantum weighting factors for photons, P function for quantum states, quantum-mechanical weight function for photons, P representation for quantum-mechanical state, superposed quantum-mechanical state, statistical mixture for quantum-mechanical state, mixed quantum-mechanical state, P representation for squeezed state    
Abstract:
In this paper, we have introduced a process that has furnished a novel weight function. This function relates to the Glauber-Sudarshan P distribution function for chaotic fields through a nonlinear relation. It is found that the new function is available to define the P representation for the squeezed states that are pure quantum-mechanical states of photons. A nondiagonal form for the density operator for a single-mode squeezed vacuum is exhibited. This form leads to interesting new concepts concerning the structure of the density matrix for photons.
    
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