A High-Flux Source of Cold Strontium with a Loading Rate of $4\times 10^{10}$ atoms/s for Open Release

Abstract

We present a high-flux source of cold strontium atoms based on a two-dimensional magneto-optical trap (2D MOT) and a Zeeman slower. We use the source to load a 3D MOT in a separate science chamber, observing a loading rate of $4\times 10^{10}$ atoms/s -- to our knowledge, the highest reported loading flux for strontium. To characterise the vacuum pressure in the science chamber, we load the atoms into a magnetic trap and measure a lifetime of between 8 and 24 seconds, depending on oven temperature. Finally, we characterise the atom flux and velocity distributions from the oven and from the 2D MOT source, finding reasonable agreement with models in the free molecular flow regime. Our results show it is possible to readily produce a cold strontium flux at comparable levels to alkali species, at oven temperatures compatible with long-term operation, and at vacuum pressures suitable for state-of-the-art quantum experiments. We make our design available at no cost, to benefit researchers in the quantum community.

arXiv comment13 pages, 10 figures

References in corpus (22)

• Many-Body Physics with Individually-Controlled Rydberg Atoms
• AION: An Atom Interferometer Observatory and Network
• Atom-interferometric test of the equivalence principle at the $10^{-12}$ level
• Atomic Interferometer with Amplitude Gratings of Light and its Applications to Atom Based Tests of the Equivalence Principle
• Exploring gravity with the MIGA large scale atom interferometer
• Bose-Einstein Condensation of Strontium
• Matter-wave Atomic Gradiometer Interferometric Sensor (MAGIS-100)
• ZAIGA: Zhaoshan Long-baseline Atom Interferometer Gravitation Antenna
• ELGAR -- a European Laboratory for Gravitation and Atom-interferometric Research
• A tweezer array with 6100 highly coherent atomic qubits
• Magnetic trapping of metastable ${}^3{P}_2$ atomic strontium
• Self-sustained oscillations in a Large Magneto-Optical Trap
• A simplified 461-nm laser system using blue laser diodes and a hollow cathode lamp for laser cooling of Sr
• A high flux source of cold strontium atoms
• A Sideband-Enhanced Cold Atomic Source For Optical Clocks
• Self-driven nonlinear dynamics in magneto-optical traps
• A hexapole-compensated magneto-optical trap on a mesoscopic atom chip
• A high-flux, adjustable, compact cold-atom source
• Instability threshold in a large balanced magneto-optical trap
• Bi-color atomic beam slower and magnetic field compensation for ultracold gases
• High flux strontium atom source
• Lifetime measurement of the 5s5p 1P1 state in strontium