University of Connecticut

Events Calendar

Graduate Student Seminar

Friday, November 22, 2019
12:15pm – 1:15pm

Storrs Campus

Prof. C. Roychoudhuri, Department of Physics, University of Connecticut

Complex interaction processes we need to visualize that successfully fill up the quantum cup of a detector

Sensors are measuring tools. In any measurement, we have at least two different kinds of interactants. We never know all there are to know about any one of these interactants and the interaction processes that are mostly invisible. Yet, our engineering innovation driven evolution is persisting for over five million years. It is then important to articulate explicitly our Interaction Process Mapping Thinking (IPM-T) that we keep applying in the real world without formally recognizing it. We present how the systematic application of IPM-T removes century old wave-particle duality by introducing a model of hybrid photon. It seamlessly bridges the quantum and the classical worlds. Photons are discrete energy packets only at the moment of emission; then they evolve diffractively and propagate as classical waves. Thus, “interference of a single indivisible photon” is only a non-causal assertion. We demonstrate NIW with simple experiments.

Then, we apply IPM-Thinking to improve the photoelectric equation & we obtain Non-Interaction of Wave (NIW) amplitudes. Note that Huygens explicitly articulated NIW by postulating his “secondary spherical wavelets”. Later Fresnel incorporated this postulate in the now famous Huygens-Fresnel (HF) diffraction integral. Most modern optical science and engineering are based upon propagating EM waves through optical devices and systems using this integral in some form or other. Maxwell’s wave equation accepts HF integral as a solution.

Systematic application of IPM-T to our causal and working mathematical equations, along with NIW in superposition experiments, reveal that Superposition Effects can emerge only when the interacting material dipoles in a detector respond, whether classically or quantum mechanically, to the joint stimulations due to all the simultaneously superposed waves. This indicates the non-causality of our belief that a single indivisible photon can interfere by itself. We would not have a causally evolving universe had any stable elementary particle were to change itself through self-interference. Further, our working superposition equations always contain two or more terms representing two or more independently evolving entities. That is why we need physical instruments with two or more independent channels of propagation along with appropriately placed detectors to generate physical superposition effects. Nature does not violate causality. Otherwise, our causally framed equations would not have been working so elegantly.


Prof. V. Kharchenko

Physics Department (primary), College of Liberal Arts and Sciences, UConn Master Calendar

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