Year: 2023
Type: article
Abstract: We present a scheme to enhance the atom number in magneto-optical traps of strontium atoms operating on the 461-nm transition. This scheme consists of resonantly driving the ${}^{1}{\mathrm{S}}_{0}\ensuremath{\rightarrow}{}^{3}{\mathrm{P}}_{1}$ intercombination line at 689 nm, which continuously populates a short-lived reservoir state and, as expected from a theoretical model, partially shields the atomic cloud from losses arising in the 461-nm cooling cycle. We show a factor of 2 enhancement in the atom number for the bosonic isotopes ${}^{88}\mathrm{Sr}$ and ${}^{84}\mathrm{Sr}$, and the fermionic isotope ${}^{87}\mathrm{Sr}$, in good agreement with our model. Our scheme can be applied in the majority of strontium experiments without increasing the experimental complexity of the apparatus, since the employed 689-nm transition is commonly used for further cooling. Our method should thus be beneficial to a broad range of quantum science and technology applications exploiting cold strontium atoms, and could be extended to other atomic species.
Source: Physical Review Applied
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: Esperantic Studies Foundation, Fundación Ramón Areces, Centres de Recerca de Catalunya, Institut de Ciències Fotòniques, European Commission, Generalitat de Catalunya, QuantERA, Agència de Gestió d'Ajuts Universitaris i de Recerca, European Regional Development Fund, Agencia Estatal de Investigación, European Social Fund
Awards: G1175115578, G1188902550, G120905174, G1622782223, G1908469581, Programmable Atomic Large-scale Quantum Simulation 2 - SGA1, G2064873908, G210041235, G2262748287, G2355262757, G2601397997, G2763573136, G288263039, G3005324705, G300979063, G34346518, G3480869486, G3589210170, G3674674691, G3681454997, G3721475206, G3775377788, G4042783231, G410571670, G4239348134, G425668148, G451917667, G4856404060, G5080475149, G5195188938, G546199279, G5539308778, G5852091828, G5967599077, ICFOstepstone PhD Programme for Early-Stage Researchers in Photonics, G6218905885, G6482940084, Disruptive Approaches to Atom-Light Interfaces, G6656126374, G69051668, G704744937, G7084143925, G8004996335, G8180681537, G8325357126, G8517543497, G8637226926, G8665153912, G8888022036, G929308097
OpenAlex ID: W4379383070