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Condensed Matter > Quantum Gases

Title: Quantum Phases of a Dipolar Fermi Gas with Laser-assisted Interwire Tunneling

Abstract: We systematically investigate unconventional superfluid phases of fermionic dipolar particles lying in a double-wire setup with laser-assisted interwire tunneling. Our numerical simulations, based on the nonlocal Kohn-Sham Bogoliubov-de Gennes equation, reveal the existence of a large Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) region with a stripe phase under an imbalance of particle densities between two wires. When the laser-assisted interwire tunneling is present, it induces a transition from the FFLO phase to the topological superfluid phase and the associated Majorana zero modes exhibit an oscillation structure, which is significantly enhanced by the long-range nature of the interwire dipolar interaction. This distinguishes itself from the results obtained with usual contact interaction and offers new opportunities for manipulating and reshaping Majorana zero modes by adjusting the degree of the nonlocality and the interwire separation.
Comments: 8 pages, 6 figures
Subjects: Quantum Gases (cond-mat.quant-gas)
Cite as: arXiv:2404.03230 [cond-mat.quant-gas]
  (or arXiv:2404.03230v1 [cond-mat.quant-gas] for this version)

Submission history

From: Jinxin Li [view email]
[v1] Thu, 4 Apr 2024 06:31:56 GMT (7656kb,D)

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