Dynamic Realization of Majorana Zero Modes in a Particle-Conserving Ladder

Autor:	Defossez, Anais, Vanderstraeten, Laurens, Gavensky, Lucila Peralta, Goldman, Nathan
Rok vydání:	2024
Předmět:	Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Quantum Gases Condensed Matter - Strongly Correlated Electrons
Druh dokumentu:	Working Paper
Popis:	We present a scheme to realize a topological superconducting system supporting Majorana zero modes, within a number-conserving framework suitable for optical-lattice experiments. Our approach builds on the engineering of pair-hopping processes on a ladder geometry, using a sequence of pulses that activate single-particle hopping in a time-periodic manner. We demonstrate that this dynamic setting is well captured by an effective Hamiltonian that preserves the parity symmetry, a key requirement for the stabilization of Majorana zero modes. The phase diagram of our system is determined using a bosonization theory, which is then validated by a numerical study of the topological bulk gap and entanglement spectrum using matrix product states. Our results indicate that Majorana zero modes can be stabilized in a large parameter space, accessible in optical-lattice experiments. Comment: 11 pages, 8 figures, including Appendix
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2412.14886 Zobrazit plný text záznamu View this record from Arxiv