[General] Electron/Photon/Quanta Modeling and Single Photon Holography

[davidmathes8 at yahoo.com]

All, 
What software do you use to model an electron, photon and perhaps quanta?
Modeling of any type has intrigued me if only to see inside something. New insights often occur. Often, the model generates more satisfying answers and more than a few questions on the physics of the electron and photon  Recently, I've been working on multiphysics modeling using COMSOL, FEEP and . I'm not sure these are the best for modeling photonic electrons, photons and quanta. 
Also, I came across an intriguing paper that may be of interest.
Hologram of a Single Photon
   Radosław Chrapkiewicz et alhttp://arxiv.org/pdf/1509.02890v2.pdf

ABSTRACT
         The spatial structure of single photons [1–3] isbecoming an extensively explored resource usedfor facilitating the free-space quantum key distribution [4–7] and quantum computation [8] aswell as for benchmarking the limits of quantumentanglement generation [3] with orbital angular momentum modes [1, 9] or reduction of thephoton free-space propagation speed [10].     Albeitnowadays an accurate tailoring of photon’s spatial structure is routinely performed using methods employed for shaping classical optical beams[3, 10, 11], the reciprocal problem of retrieving the spatial phase-amplitude structure of anunknown single photon cannot be solved usingcomplimentary classical holography techniques[12, 13] exhibiting excellent interferometric precision.     Here we introduce a method to record ahologram of a single photon (HSP) probed by an-other reference photon, based on essentially different concept of quantum interference betweentwo-photon probability amplitudes. Similarly toclassical holograms, HSP encodes full informationabout photon’s “shape”, i.e. its quantum wave function whose local amplitude and phase are retrieved in the demonstrated experiment. 

Best
David   
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