Spin-orbit coupled interferometry with ring–trapped Bose–Einstein condensates: supporting data

Helm, John L. (Durham University, UK); Billam, Thomas P. (Newcastle University, UK); Cornish, Simon L. (Durham University, UK); Gardiner, Simon A. (Durham University, UK); Rakonjac, Ana (Durham University, UK)

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Spin-orbit coupled interferometry with ring–trapped Bose–Einstein condensates: supporting data Open Access

We propose a method of atom-interferometry using a spinor Bose–Einstein (BEC) and the well-established experimental technique of time-varying magnetic fields as a coherent beam-splitter. Our protocol creates long-lived superpositional counterflow states, which are of fundamental interest and can be made sensitive to both the Sagnac effect and magnetic fields on the sub micro-Gauss scale. We split a ring-trapped condensate, initially in the m f = 0 hyperfine sub-level, into superpositions of both internal spin state and condensate superflow, which are spin-orbit coupled. After interrogation a relative phase accumulation can be inferred from a population transfer to the m f = ±1 states. Our protocol maximises the classical Fisher information, and owing to the adiabatic splitting it may be a good candidate for developing quantum enhanced interferometry schemes. We present numerical and analytical treatments of our system.

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Resource type: Dataset
Contributors: Creator: Helm, John L. ¹
Contact person: Helm, John L. ¹
Creator: Billam, Thomas P. ²
Creator: Rakonjac, Ana ¹
Creator: Cornish, Simon L. ¹
Creator: Gardiner, Simon A. ¹

¹ Durham University, UK
² Newcastle University, UK
Funder: UK EPSRC (grant number EP/K03250X/1) Engineering and Physical Sciences Research Council
Engineering and Physical Sciences Research Council
Research methods
Other description
Keyword: Theoretical Physics
Spinor Condensates
Atom Interferometry
Subject: Atomic Physics
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Identifier: ark:/32150/r1m900nt41q
doi:10.15128/r1m900nt41q
Publisher: Durham University
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