# Towards spinor condensates at ultralow magnetic field: creating dipolar quantum gases

Brannan, Mark (2017). Towards spinor condensates at ultralow magnetic field: creating dipolar quantum gases. University of Birmingham. Ph.D.

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## Abstract

This thesis outlines the design and construction of an experiment to investigate dipolar interactions within a rubidium-87 ($$^8$$$$^7$$Rb) spinor Bose-Einstein condensate (BEC). For dipolar interactions to drive population transfer between the internal states of a $$^8$$$$^7$$Rb BEC the ambient magnetic field must be reduced below 100 pT. To this end I have designed an active magnetic stabilisation system which is able to reduce the ambient magnetic field to a given level with 30 nT peak-to-peak fluctuations. A design is presented for a complementary passive magnetic shield in order to further reduce the ambient magnetic field, which electromagnetic simulations show should provide a factor of >10$$^8$$ reduction in the ambient magnetic field.

Type of Work: Thesis (Doctorates > Ph.D.)
Award Type: Doctorates > Ph.D.
Supervisor(s):
Supervisor(s)EmailORCID
Bongs, KaiUNSPECIFIEDUNSPECIFIED
Kowalczyk, AnnaUNSPECIFIEDUNSPECIFIED
Licence:
College/Faculty: Colleges (2008 onwards) > College of Engineering & Physical Sciences
School or Department: School of Physics and Astronomy
Funders: None/not applicable
Subjects: Q Science > QC Physics
URI: http://etheses.bham.ac.uk/id/eprint/7507

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