Density oscillation in highly flattened quantum elliptic rings and tunable strong dipole radiation

Shuping Situ; Yanzhang He; Chengguang Bao

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arXiv · 0704.0867

Density oscillation in highly flattened quantum elliptic rings and tunable strong dipole radiation

Shuping Situ·Yanzhang He·Chengguang Bao

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Abstract

A narrow elliptic ring containing an electron threaded by a magnetic field B is studied. When the ring is highly flattened, the increase of B would lead to a big energy gap between the ground and excited states, and therefore lead to a strong emission of dipole photons. The photon frequency can be tuned in a wide range by changing B and/or the shape of the ellipse. The particle density is found to oscillate from a pattern of distribution to another pattern back and forth against $B$. This is a new kind of Aharonov-Bohm oscillation originating from symmetry breaking and is different from the usual oscillation of persistent current.

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Shuping Situ, Yanzhang He, Chengguang Bao. 2007-04-06. Density oscillation in highly flattened quantum elliptic rings and tunable strong dipole radiation. https://arxiv.org/abs/0704.0867

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