D. Buhin | Searcharxiv

arXiv2023

Comparative study of light storage in antirelaxation-coated and buffer-gas-filled alkali vapor cells

We perform a comparative study of light storage in antirelaxation-coated and buffer-gas-filled alkali-vapor cells using electromagnetically induced transparency (EIT) in warm rubidium vapor. The use of a buffer-gas-filled cell resulted in $\approx$10-fold improvement in storage time and efficiency compared to antirelaxation coated cells. Our findings contribute to the development of future field-deployable high-performance quantum memories.

quant-ph↗

arXiv2020

Simultaneous dual-species laser cooling using an optical frequency comb

We demonstrate 1D simultaneous laser cooling of $^{87}$Rb and $^{85}$Rb atoms using an optical frequency comb. By adjusting the pulse repetition frequency and the offset frequency, the frequency comb spectrum is tuned to ensure that two distinct frequency comb modes are simultaneously red-detuned from the cooling transitions, one mode for each species. Starting from a pre-cooled cloud of $^{85,87}$Rb atoms at above-Doppler temperatures, we show simultaneous cooling of both species down to the Doppler temperature using two counter-propagating $σ$$^{+}$/$σ$$^{-}$-polarized beams from the frequency comb. The results indicate that simultaneous dual-species frequency comb cooling does not affect the cooling characteristics of individual atomic species. The results of this work imply that several atomic species could be cooled simultaneously using a single frequency comb source. This comb-based multi-channel laser cooling could bring significant advances in multi-species atom interferometers for space applications and in the study of multi-species interactions.

physics.atom-ph↗