Compact setup for the production of {sup 87}Rb |F = 2, m{sub F} = + 2〉 Bose-Einstein condensates in a hybrid trap

Journal Article · Mon Aug 15 04:00:00 EDT 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4960395· OSTI ID:22597710

Nolli, Raffaele; Venturelli, Michela; Marmugi, Luca; Wickenbrock, Arne; Renzoni, Ferruccio ^[1]

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1. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom)

We present a compact experimental apparatus for Bose-Einstein condensation of {sup 87}Rb in the |F  =  2, m{sub F} = + 2〉 state. A pre-cooled atomic beam of {sup 87}Rb is obtained by using an unbalanced magneto-optical trap, allowing controlled transfer of trapped atoms from the first vacuum chamber to the science chamber. Here, atoms are transferred to a hybrid trap, as produced by overlapping a magnetic quadrupole trap with a far-detuned optical trap with crossed beam configuration, where forced radiofrequency evaporation is realized. The final evaporation leading to Bose-Einstein condensation is then performed by exponentially lowering the optical trap depth. Control and stabilization systems of the optical trap beams are discussed in detail. The setup reliably produces a pure condensate in the |F = 2, m{sub F} = + 2〉 state in 50 s, which includes 33 s loading of the science magneto-optical trap and 17 s forced evaporation.

• OSTI ID: 22597710
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 8 Vol. 87; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMIC BEAMS
ATOMS
BOSE-EINSTEIN CONDENSATION
COLLIDING BEAMS
DEPTH
EVAPORATION
LOADING
RADIOWAVE RADIATION
RUBIDIUM 87
TRAPS