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Construction of a Magneto-Optical Trap to Create Ultracold Rubidium Ensembles

Hayden Snauwaert

Ultracold atoms are a desirable substrate for experiments in quantum optics due to their highly coherent nature. Magneto-Optical Traps (MOTs) are a commonly used apparatus for producing clouds of cold, neutrally charged atoms such as Rubidium. The method relies on the effect of Doppler cooling, where laser light that has been detuned slightly below an atomic resonance results in a net cooling effect on the atoms, and magnetic trapping, where a linear magnetic field gradient results in a position dependent restoring force that traps the desired atoms at a central point. In the UVic AMO lab, we aim to build a MOT that is capable of producing ultracold rubidium clouds with temperatures on the order of 10μK.Ultracold atoms are a desirable substrate for experiments in quantum optics due to their highly coherent nature. Magneto-Optical Traps (MOTs) are a commonly used apparatus for producing clouds of cold, neutrally charged atoms such as Rubidium. The method relies on the effect of Doppler cooling, where laser light that has been detuned slightly below an atomic resonance results in a net cooling effect on the atoms, and magnetic trapping, where a linear magnetic field gradient results in a position dependent restoring force that traps the desired atoms at a central point. In the UVic AMO lab, we aim to build a MOT that is capable of producing ultracold rubidium clouds with temperatures on the order of 10μK.

Jan 1, 20240 citations

A Study of Rubidium Atoms in a Magneto-Optical Trap

A. Pietiläinen, H. Ludvigsen, Hannu Talvitie +1 more

Jan 1, 19950 citations

A magneto-optic trap for rubidium

Holger Delfs

Aug 24, 19920 citations

Measurement of the Temperature of Rubidium Atoms in a Magneto-Optical Trap

J. W. F. Liwag, V. A. Sicam, K. Karremans

We have performed measurements that can be used to determine the temperature of rubidium atoms in a magneto-optical trap.The expansion of the atomic cloud after switching off the current through the anti-Helmholtz coils was recorded with a CCDcamera. Analysis of the measurements revealed that the cloud of atoms in optical molasses expands at a velocity of 4 cm/s.

Jun 1, 20030 citations

Measurements on release-recapture of cold 85Rb atoms using an optical nanofibre in a magneto-optical trap

We have performed release-recapture temperature measurements of laser-cooled 85Rb atoms using an optical nanofibre (ONF) in a magneto-optical trap (MOT). The effects of changing the cooling laser light-shift parameter on the temperature of the cold atoms and spring constant of the trap are studied. By varying the cold atom number density near the ONF, the onset of the multiple scattering regime is observed without the need for an estimation of the atom cloud size. Moreover, this sensitive ONF assisted release-recapture technique is easily able to detect any optical misalignment of the cooling laser beams in the MOT. Keywords: laser cooling, optical nanofiber, rubidium, release-recapture, temperatureWe have performed release-recapture temperature measurements of laser-cooled 85Rb atoms using an optical nanofibre (ONF) in a magneto-optical trap (MOT). The effects of changing the cooling laser light-shift parameter on the temperature of the cold atoms and spring constant of the trap are studied. By varying the cold atom number density near the ONF, the onset of the multiple scattering regime is observed without the need for an estimation of the atom cloud size. Moreover, this sensitive ONF assisted release-recapture technique is easily able to detect any optical misalignment of the cooling laser beams in the MOT. Keywords: laser cooling, optical nanofiber, rubidium, release-recapture, temperature

Aug 17, 201631 citations

Characterization of a Rubidium Magneto-Optical Trap

Wei Wen Yu, Brad Crochet, Gregory Carson +1 more

APSJun 1, 20070 citations

Rubidium Cloud Size in a Magneto-Optical Trap

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