Spin squeezing in open Heisenberg spin chains
- URL: http://arxiv.org/abs/2302.09829v2
- Date: Tue, 27 Jun 2023 11:03:30 GMT
- Title: Spin squeezing in open Heisenberg spin chains
- Authors: Tanaus\'u Hern\'andez Yanes, Giedrius \v{Z}labys, Marcin
P{\l}odzie\'n, Domantas Burba, Ma\v{z}ena Mackoit Sinkevi\v{c}ien\.e, Emilia
Witkowska, Gediminas Juzeli\=unas
- Abstract summary: We show that spin squeezing can be generated in the Heisenberg spin-1/2 chain with periodic boundary conditions.
A broad family of twisting models can be simulated by the system in the weak coupling regime.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Spin squeezing protocols successfully generate entangled many-body quantum
states, the key pillars of the second quantum revolution. In our recent work
[Phys. Rev. Lett. 129, 090403 (2022)] we showed that spin squeezing described
by the one-axis twisting model could be generated in the Heisenberg spin-1/2
chain with periodic boundary conditions when accompanied by a
position-dependent spin-flip coupling induced by a single laser field. This
work shows analytically that the change of boundary conditions from the
periodic to the open ones significantly modifies spin squeezing dynamics. A
broad family of twisting models can be simulated by the system in the weak
coupling regime, including the one- and two-axis twisting under specific
conditions, providing the Heisenberg level of squeezing and acceleration of the
dynamics. Full numerical simulations confirm our analytical findings.
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