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Article overview
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Detecting $pi$-phase superfluids with $p$-wave symmetry in a quasi-1D optical lattice | | Bo Liu
; Xiaopeng Li
; Randall G. Hulet
; W. Vincent Liu
; | | Date: |
29 May 2015 | | Abstract: | We propose an experimental protocol to study $p$-wave superfluidity in a
spin-polarized cold Fermi gas tuned by an $s$-wave Feshbach resonance. A
crucial ingredient is to add a quasi-1D optical lattice and tune the fillings
of two spins to the $s$ and $p$ band, respectively. The pairing order parameter
is confirmed to inherit $p$-wave symmetry in its center-of-mass motion. We find
that it can further develop into a state of unexpected $pi$-phase modulation
in a broad parameter regime. Measurable quantities are calculated, including
time-of-flight distributions, radio-frequency spectra, and in situ
phase-contrast imaging in an external trap. The $pi$-phase $p$-wave superfluid
is reminiscent of the $pi$-state in superconductor-ferromagnet
heterostructures but differs in symmetry and origin. If observed, it would
represent another example of $p$-wave pairing, first discovered in He-3
liquids. | | Source: | arXiv, 1505.8164 | | Services: | Forum | Review | PDF | Favorites | |
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