Miscellaneous

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Coupled Harmonic Oscillator Lattice Eigenmodes

Plot of eigenvectors (mode configurations) and eigenvalues (mode frequencies) for a classical lattice of coupled harmonic oscillators, with open, closed, and periodic boundary conditions. These were generated from harmonic-lattice.py. A full description of the Lagrangian is commented in the code.

In these plots, each eigenvector is plotted with its eigenvalue given by x-axis height (the same way, eg, that particle in a box modes are often depicted).
Caution: If you click, get ready to SCROLL a LOT!

eigvecs_N(51)_mu(0d5)_V(Vij_closed).pdf
eigvecs_N(51)_mu(0d5)_V(Vij_open).pdf
eigvecs_N(51)_mu(0d5)_V(Vij_periodic).pdf

And here is an example (different params) of the eigenvalues coalescing as BCs transition from closed to periodic.

eigvals_vs_lambda_N(6)_x(0.5)_lopen(0.0-to-0.0)_lper(0.0-to-1.0).pdf

QSHO States

Various states of a quantum simple harmonic oscillator, shown in both position and number bases. (Note: missing mag squared signs in annotation text of image.)

Induced Probability Density on Qubit Subsystems

The file below shows some properties of a qubit embedded within a higher dimensional pure subsystem.

qubit-induced.pdf

Jet Color Palette

A palette drawn from the Jet colormap.

jet.pdf
jet.py