2014/06/30 by Krzysztof Sacha, Dominique Delande
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Excitation #Fermi Gamma-ray Space Telescope #Nonlinear system #Phase (matter) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Soliton #Superfluidity #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.90.021604
published as Phys. Rev. A 90, 021604 (2014) · 5 pages, 2 figures, version accepted for publication in Phys. Rev. A Rapid Communications
arxiv created 2014/08/07 · openalex publication_date 2014/08/26 · arxiv updated 2014/09/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
It is common knowledge that a dark soliton can be excited in an ultra-cold atomic gas by means of the phase imprinting method. We show that, for a superfluid fermionic mixture, the standard phase imprinting procedure applied to both components fails to create a state with symmetry properties identical to those of the dark soliton solution of the Bogoliubov-de Gennes equations. To produce a dark soliton in the BCS regime, a single component of the Fermi mixture should be phase imprinted only.