Using 2D vortex plasmons/phonon polaritons to control electronic selection rules
Name
961269848-MIT.pdf
Description
Full printable version
Size
5.64 MB
Format
Adobe PDF
Checksum (MD5)
5e08c1db855785c2dea681633bafb219
Author(s)
Leal Machado, Francisco
Advisor(s)
Marin Soljač̌ić́.
Alternative Title
Using 2-dimensional plasmons/phonon polaritons to control electronic selection rules
Using two-dimensional vortex plasmons/phonon polaritons to control electronic selection rules
Date Issued
2016
Publisher
Massachusetts Institute of Technology
Abstract
The discovery of orbital angular momentum (OAM) sustaining modes established a new degree of freedom by which to control not only the flow of light but also its interaction with matter. However, OAM sustaining modes have yet to be used to control the quantum dynamics of an electron in an atom or molecule due to the large length scale discrepancy between the wavelength of light and the size of the electron's orbital. In this work, we analyze the interaction between OAM carrying polariton vortex modes (for plasmon and phonon polaritons) and a hydrogen atom, and show that these modes can be used to engineer new selection rules in electronic transitions. Moreover, we show that these selection rules are robust to the displacement of the electronic system away from the vortex center. Perhaps more surprisingly, we find how displacement can be used favourably to tune which absorption process is dominant. Our findings are best suited to vortex modes that can be created in graphene, monolayer conductors, hBN, thin polar dielectrics, and many other polariton-sustaining thin materials. Another platform for observing these effects could be quantum dots interfaced with surface plasmons in-conventional metals.
Description
Thesis: S.B., Massachusetts Institute of Technology, Department of Physics, 2016.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 69-73).
Subjects
Physics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
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