Rabi oscillations with close-range quantum vortex states

TL;DR

This paper investigates how close-range interactions and core compressibility affect vortex dynamics, revealing a new slower orbital state and demonstrating Rabi oscillations between vortex states through interaction modulation.

Contribution

It introduces a novel close-range vortex interaction regime and demonstrates Rabi oscillations between vortex states by modulating interaction strength.

Findings

Discovery of a new slower orbital vortex state at close range.

Demonstration of Rabi oscillations between vortex states.

Identification of core compressibility effects on vortex dynamics.

Abstract

Quantum vortices separated through distances much larger than their core size interact via their long-range velocity field. At smaller separations, however, the influence of the core's compressibility strongly influences the vortex dynamics. Using the example of a compact ring of five vortices, it is shown that close-range effects lead to a new (slower) state of orbital motion which is not predicted by the usual long-range theory. This secondary state can be created starting from the usual orbital state by modulating the interaction strength to induce Rabi oscillations between the states.