Programmable Doppler real-space pattern formation in cold atoms
Résumé
Red-detuned Doppler cooling decelerates atomic motion toward zero velocity, whereas blue-detuned light produces acceleration that separates a cold cloud into finite-velocity packets. Here we combine these complementary dynamics in a programmable split-stop protocol for real-space pattern formation. During each stage, a blue-detuned pulse splits existing packets and drives them apart, while a subsequent red-detuned pulse returns their center-of-mass velocities close to zero, results in spatially resolved stationary packets. Repeating this process recursively multiplies the number of packets in real space. We model the dynamics using stochastic photon-jump simulations that include absorption and spontaneous-emission recoil in one and two dimensions. Using experimentally realistic parameters for the $689~\mathrm{nm}$ ${}^{1}S_{0}\rightarrow{}^{3}P_{1}$ transition of ${}^{88}\mathrm{Sr}$, we demonstrate an 8-packet one-dimensional array and a 64-packet two-dimensional square array.
Citer ce document
Accès au document
Texte intégral en lecture en ligne, réservé aux abonnés SPHAERO et aux membres de l'institution. Se connecter
Voir l'article sur le site de la revueAuteur(s)
Statistiques
Consultations : 1
Téléchargements : 0