Journal
MEASUREMENT SCIENCE AND TECHNOLOGY
Volume 23, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-0233/23/1/015201
Keywords
rubidium; laser cooling; temperature; nanofibre; forced oscillation
Funding
- Science Foundation Ireland [07/RFP/PHYF518, 08/ERA/I1761]
- Higher Education Authority
- IRCSET under the Embark Initiative
- Science Foundation Ireland (SFI) [07/RFP/PHYF518, 08/ERA/I1761] Funding Source: Science Foundation Ireland (SFI)
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We present a method for measuring the average temperature of a cloud of cold Rb-85 atoms in a magneto-optical trap using an optical nanofibre. A periodic spatial variation is applied to the magnetic fields generated by the trapping coils and this causes the trap centre to oscillate, which, in turn, causes the cloud of cold atoms to oscillate. The optical nanofibre is used to collect the fluorescence emitted by the cold atoms, and the frequency response between the motion of the centre of the oscillating trap and the cloud of atoms is determined. This allows us to make measurements of cloud temperature both above and below the Doppler limit, thereby paving the way for nanofibres to be integrated with ultracold atoms for hybrid quantum devices.
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