On quantum rings and symmetric molecules in circularly polarized laser fields

ON QUANTUM RINGS AND SYMMETRIC MOLECULES IN CIRCULARLY POLARIZED LASER FIELDS 

In this section, we would like to characterize the symmetry properties of the modified energy levels in symmetric molecules and nanostructures induced 

The single-electron eigenstates of the QR can be classified with respect to the rotation operator C j, 

Are there non-accidentally degenerate energy levels in this system The answer is positive. In order to verify this, let us distinguish between two cases. If, in addition to the A-fold rotation symmetry CjV) the Hamiltoman is invariant under the reflection symmetry y = y— -—y) = (p — p), one obtains the familiar result reflected by the character table of the point group C 

Let us add a circularly polarized laser field and inquire what happens to the energy levels of the QR. In the presence of a time-periodic laser field. 

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On quantum rings and symmetric molecules in circularly polarized laser fields 394... 

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