Correlation-induced phase transitions and mobility edges in an interacting non-Hermitian quasicrystal

• URL: http://arxiv.org/abs/2310.01275v3
• Date: Thu, 22 Feb 2024 12:14:16 GMT
• Title: Correlation-induced phase transitions and mobility edges in an interacting non-Hermitian quasicrystal
• Authors: Tian Qian, Yongjian Gu, and Longwen Zhou
• Abstract summary: We uncover the effect of quantum correlation on phase transitions and entanglement dynamics in non-Hermitian quasicrystals. Our findings pave the way for further studies of the interplay between disorder and interaction in non-Hermitian quantum matter.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Non-Hermitian quasicrystal constitutes a unique class of disordered open system with PT-symmetry breaking, localization and topological triple phase transitions. In this work, we uncover the effect of quantum correlation on phase transitions and entanglement dynamics in non-Hermitian quasicrystals. Focusing on two interacting bosons in a Bose-Hubbard lattice with quasiperiodically modulated gain and loss, we find that the onsite interaction between bosons could drag the PT and localization transition thresholds towards weaker disorder regions compared with the noninteracting case. Moreover, the interaction facilitates the expansion of the critical point of a triple phase transition in the noninteracting system into a critical phase with mobility edges, whose domain could be flexibly controlled by tuning the interaction strength. Systematic analyses of the spectrum, inverse participation ratio, topological winding number, wavepacket dynamics and entanglement entropy lead to consistent predictions about the correlation-driven phases and transitions in our system. Our findings pave the way for further studies of the interplay between disorder and interaction in non-Hermitian quantum matter.

Related papers

• Dynamical topological phase transition in cold Rydberg quantum gases [23.439762818503013]
  We report the experimental observation of dynamical topological phase transitions in cold Rydberg atomic gases under a microwave field driving. At the transition state, where the winding number flips, the topology of these trajectories evolves into more non-trivial structures.
  arXiv  Detail & Related papers  (2024-09-17T09:59:36Z)
• Entanglement phase transitions in non-Hermitian Floquet systems [0.0]
  In this work, we reveal entanglement transitions in the context of non-Hermitian Floquet systems. We find that the monotonic increase of quenched hopping amplitude could flip the system between volume-law and area-law entangled Floquet phases. Our findings build a foundation for exploring entanglement phase transitions in Floquet non-Hermitian setups.
  arXiv  Detail & Related papers  (2023-10-17T15:40:12Z)
• Inter-Particle Correlations in the Dissipative Phase Transition of a Collective Spin Model [0.9627066153699632]
  In open quantum systems undergoing phase transitions, the intricate interplay between unitary and dissipative processes leaves many information-theoretic properties opaque. We are here interested in interparticle correlations within such systems, specifically examining quantum entanglement, quantum discord, and classical correlation within the steady state of a driven-dissipative collective spin model.
  arXiv  Detail & Related papers  (2023-08-25T18:48:22Z)
• Interaction-induced topological pumping in a solid-state quantum system [18.7657779101508]
  Inter-particle interaction can profoundly alter the band structure of quantum many-body systems. Here we demonstrate interaction-induced topological pumping in a solid-state quantum system comprising an array of 36 superconducting qubits.
  arXiv  Detail & Related papers  (2023-03-08T13:57:13Z)
• Multipartite Entanglement in the Measurement-Induced Phase Transition of the Quantum Ising Chain [77.34726150561087]
  External monitoring of quantum many-body systems can give rise to a measurement-induced phase transition. We show that this transition extends beyond bipartite correlations to multipartite entanglement.
  arXiv  Detail & Related papers  (2023-02-13T15:54:11Z)
• Phase diagram of Rydberg-dressed atoms on two-leg triangular ladders [50.591267188664666]
  We investigate the phase diagram of hard-core bosons in a triangular ladder with next-to-nearest-neighbor interaction along each leg. For weak interactions, Abelian bosonization predicts a spin density wave and a fully gapless Luttinger liquid phase. The competition with the zigzag interaction generates a charge density wave, a 'polarized holonic' phase, and a crystalline phase at the filling 2/5.
  arXiv  Detail & Related papers  (2022-07-01T12:49:04Z)
• Tuning long-range fermion-mediated interactions in cold-atom quantum simulators [68.8204255655161]
  Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
  arXiv  Detail & Related papers  (2022-03-31T13:32:12Z)
• Dimerization induced mobility edges and multiple reentrant localization transitions in non-Hermitian quasicrystals [0.0]
  Non-Hermitian effects could create rich dynamical and topological phase structures. We show that the collaboration between lattice dimerization and non-Hermiticity could generally bring about mobility edges and multiple localization transitions in one-dimensional quasicrystals.
  arXiv  Detail & Related papers  (2021-11-16T13:01:48Z)
• Quantum phase transition in the one-dimensional Dicke-Hubbard model with coupled qubits [20.002319486166016]
  We study the ground state phase diagram of a one-dimensional two qubits Dicke-Hubbard model with XY qubit-qubit interaction.
  arXiv  Detail & Related papers  (2021-11-05T13:17:49Z)
• Non-Hermitian quasicrystal in dimerized lattices [0.0]
  Non-Hermitian quasicrystals possess PT and metal-insulator transitions induced by gain and loss or nonreciprocal effects. By investigating the spectrum, adjacent gap ratios and inverse participation ratios, we find an extended phase, a localized phase and a mobility edge phase.
  arXiv  Detail & Related papers  (2021-05-07T14:52:47Z)
• Localization and topological transitions in non-Hermitian quasiperiodic lattices [1.6530012863603747]
  We investigate the localization and topological transitions in a one-dimensional non-Hermitian quasiperiodic lattice. For interacting spinless fermions, we demonstrate that the extended phase and the many-body localized phase can be identified by the entanglement entropy of eigenstates.
  arXiv  Detail & Related papers  (2021-01-14T08:56:18Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.