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Probing the dynamic structure factor of a neutral Fermi superfluid along the BCS-BEC crossover using atomic impurity qubits

Abstract:

We study an impurity atom trapped by an anharmonic potential, immersed within a cold atomic Fermi gas with attractive interactions that realizes the crossover from a Bardeen-Cooper-Schrieffer (BCS) superfluid to a Bose-Einstein condensate (BEC). Considering the qubit comprising the lowest two vibrational energy eigenstates of the impurity, we demonstrate that its dynamics probes the equilibrium density fluctuations encoded in the dynamic structure factor of the superfluid. Observing the impur...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted Manuscript

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Publisher copy:
10.1103/PhysRevA.94.063618

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Department:
Oxford, MPLS, Physics, Atomic & Laser Physics
Role:
Author
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Department:
Keble College
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Author
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Funding agency for:
Jaksch, D
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review A Journal website
Volume:
94
Issue:
6
Pages:
Article: 063618
Publication date:
2016-01-01
Acceptance date:
2016-11-18
DOI:
EISSN:
2469-9934
ISSN:
2469-9926
Pubs id:
pubs:664159
URN:
uri:b760c961-f2b0-42f1-bd75-e45262f90574
UUID:
uuid:b760c961-f2b0-42f1-bd75-e45262f90574
Local pid:
pubs:664159
Paper number:
6

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