Vibration induced transparency and absorption with two ion ensembles in a linear trap

TL;DR

This paper investigates how vibrational interactions in two ion ensembles within a linear trap lead to phenomena like transparency and absorption changes in their spectra, revealing new quantum optical effects.

Contribution

It demonstrates vibration-induced transparency and absorption phenomena in two ion ensembles, highlighting the role of vibrational sidebands in spectral responses.

Findings

Vibration-induced transparency occurs at the first red sideband.

Absorption peaks convert to transparency windows at the first blue sideband.

Similar phenomena are observed in fluctuation spectra of collective modes.

Abstract

We study the spectra of collective low excitations of two atomic ion ensembles which are confined in a liner trap by addressing lases. When the left ensemble is driven by an external optical field, its corresponding response spectrum to the incident optical light shows a vibration-induced transparency phenomenon when the detuning of the laser addressing the ion is tuned to the first red sideband. In the case of the detuning tuned to the first blue sideband, the response spectrum shows a conversion from the absorption peak to the transparency window. Furthermore, we investigate the fluctuation spectra of the collective excitation modes of ion ensemble and show the similar phenomena.