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  • Letter
  • Open Access

Quantum synchronization in one-dimensional topological systems

Tong Liu*, Laura García-Álvarez, and Giovanna Tancredi

  • *Contact author: tliu.phys@gmail.com
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Phys. Rev. Research 7, L022064 – Published 11 June, 2025

DOI: https://doi.org/10.1103/mr1f-v8cv

Abstract

The phenomenon of synchronization, where entities exhibit stable oscillations with aligned frequencies and phases, has been revealed in diverse areas of natural science. It plays a crucial role in achieving frequency locking in multiple applications such as microwave communication and signal processing. The study of synchronization in quantum systems has gained significant interest, particularly in developing robust methods for synchronizing distant objects. Here, we demonstrate that synchronization between the boundary sites of one-dimensional generalized Aubry-André-Harper models can be induced through applying dissipation on the central sites. We observe two types of synchronization, stemming from the topological edge states, identified by the off-diagonal or diagonal correlations between the boundary sites. We calculate the relaxation rate to realize the synchronization and its acceleration with bulk dissipation. Remarkably, the synchronous oscillations maintain steady amplitude and frequency in the thermodynamic limit. Moreover, we show that the synchronization is robust against perturbations in the Hamiltonian and initial states, highlighting its potential for practical implementation on near-term quantum simulation platforms.

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Phys. Rev. Research 7, L022064– Published 11 June, 2025
  • Received 28 November 2024
  • Revised 19 March 2025
  • Accepted 12 May 2025
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