The Population Oscillation of Multicomponent Spinor Bose-Einstein Condensate Induced by Nonadiabatic Transitions

TL;DR

This paper demonstrates the generation of population oscillations in multicomponent spinor Bose-Einstein condensates caused by nonadiabatic transitions induced during trap switch-off, supported by experimental data and analytical modeling.

Contribution

It provides experimental observation and analytical modeling of population oscillations in spinor BECs due to nonadiabatic transitions during trap switching.

Findings

Population oscillations observed in spinor BECs.

Analytical expression matches experimental data.

Nonadiabatic transitions induce population dynamics.

Abstract

The generation of the population oscillation of the multicomponent spinor Bose-Einstein condensate is demonstrated in this paper. We observe and examine the nonsynchronous decreasing processes of the magnetic fields generated between quadrupole coils and Ioffe coils during the switch-off of the quadrupole-Ioffe-configuration trap, which is considered to induce a nonadiabatic transition. Starting from the two-level Schr\"{o}dinger equation, we have done some numerical fitting and derived an analytical expression identical to the results of E. Majorana and C. Zener, of which both the results well match the experimental data.