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Effective Hamiltonian with tunable mixed pairing in driven optical lattices by Wu, Yu-Biao; Guo, Guang-Can; Zheng, Zhen; Zou, Xu-Bo is a scholarly article available to read on EtoBox.

What is Effective Hamiltonian with tunable mixed pairing in driven optical lattices about?

Mixed pairing in ultracold Fermi gases can give rise to interesting many-body phases, such as topological nontrivial superfluids that support Majorana zero modes (MZMs) with various spatial configurations. Unfortunately, in ordinary lattice systems, the topological phase and the associated MZMs are suppressed by the dominant $s$-wave pairing. Here we present a proposal for engineering effective Hamiltonians with tunable mixed on- and off-site pairing based on driven optical lattices. The on- and off-site pairing can be changed independently by means of a periodical driving field rather than magnetic Feshbach resonances. It paves the way for suppressing the dominant on-site interaction that frustrates the emergence of topological superfluids and for synthesizing MZMs localized in edges or corners.

Author

Wu, Yu-Biao; Guo, Guang-Can; Zheng, Zhen; Zou, Xu-Bo

Published

2020

Language

EN