Immortal quantum correlation in quasiperiodic quasi-1D system

• URL: http://arxiv.org/abs/2409.10614v1
• Date: Mon, 16 Sep 2024 18:00:04 GMT
• Title: Immortal quantum correlation in quasiperiodic quasi-1D system
• Authors: Junmo Jeon, SungBin Lee,
• Abstract summary: The prevailing view on long-range correlations is that they typically attenuate uniformly with distance and temperature. This study demonstrates that the interplay between quasiperiodicity and the quasi-1D nature of subbands can result in strong long-range coupling.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The prevailing view on long-range correlations is that they typically attenuate uniformly with distance and temperature, as most interactions either exhibit short-range dominance or decay following a power law. In contrast to this belief, this study demonstrates that the intricate interplay between quasiperiodicity and the quasi-1D nature of subbands can result in strong long-range coupling without attenuation, a phenomenon referred to as an immortal interaction. Exemplifying a periodically stacked Fibonacci chain, we uncover an immortal interaction with greatly enhanced, persistent long-range coupling. Using negativity, it is shown that this interaction creates stable entanglement that endures over long distances and remains robust at finite temperatures. Additionally, unconventional logarithmic scaling entanglement is revealed, deviating from the traditional area law. These findings offer quasiperiodic quasi-1D systems as a novel platform for sustaining stable entanglement across exceptionally long distances, even in the presence of finite temperature effects.

Related papers

• Environment-Mediated Long-Ranged Correlations in Many-Body System [4.294325039706825]
  We utilize the recently developed Quantum Dissipation with Minimally Extended State Space (QD-MESS) approach to address reservoir induced long-ranged temporal in finite size Ising-type spin chains. For thermal correlations with ohmic and subohmic spectral density we simulate the quantum time evolution from finite to zero temperature. The competition between thermal fluctuations, quantum fluctuations, and anti-ferromagnetic interactions reveal a rich pattern of dynamical phases.
  arXiv  Detail & Related papers  (2024-06-25T03:51:49Z)
• Long-range interactions in Weyl dense atomic arrays protected from dissipation and disorder [41.94295877935867]
  Long-range interactions are a key resource in many quantum phenomena and technologies. We show how to design the polaritonic bands of these atomic metamaterials to feature a pair of frequency-isolated Weyl points. These Weyl excitations can thus mediate interactions that are simultaneously long-range, due to their gapless nature; robust, due to the topological protection of Weyl points; and decoherence-free, due to their subradiant character.
  arXiv  Detail & Related papers  (2024-06-18T20:15:16Z)
• Formation of robust bound states of interacting microwave photons [148.37607455646454]
  One of the hallmarks of interacting systems is the formation of multi-particle bound states. We develop a high fidelity parameterizable fSim gate that implements the periodic quantum circuit of the spin-1/2 XXZ model. By placing microwave photons in adjacent qubit sites, we study the propagation of these excitations and observe their bound nature for up to 5 photons.
  arXiv  Detail & Related papers  (2022-06-10T17:52:29Z)
• In-Gap Band Formation in a Periodically Driven Charge Density Wave Insulator [68.8204255655161]
  Periodically driven quantum many-body systems host unconventional behavior not realized at equilibrium. We investigate such a setup for strongly interacting spinless fermions on a chain, which at zero temperature and strong interactions form a charge density wave insulator.
  arXiv  Detail & Related papers  (2022-05-19T13:28:47Z)
• Clean two-dimensional Floquet time-crystal [68.8204255655161]
  We consider the two-dimensional quantum Ising model, in absence of disorder, subject to periodic imperfect global spin flips. We show by a combination of exact diagonalization and tensor-network methods that the system can sustain a spontaneously broken discrete time-translation symmetry. We observe a non-perturbative change in the decay rate of the order parameter, which is related to the long-lived stability of the magnetic domains in 2D.
  arXiv  Detail & Related papers  (2022-05-10T13:04:43Z)
• Aspects of entanglement in non-local field theories with fractional Laplacian [0.0]
  Logarithmic negativity, which is a measure for entanglement in mixed states is calculated numerically. For a sudden quantum quench, the temporal evolution of the logarithmic negativity reveals that, in contrast to short-range models, logarithmic negativity exhibits no revivals for long-range interactions for the time intervals considered.
  arXiv  Detail & Related papers  (2021-12-27T13:08:28Z)
• Anomalous multifractality in quantum chains with strongly correlated disorder [68.8204255655161]
  We show that a robust and unusual multifractal regime can emerge in a one-dimensional quantum chain with maximally correlated disorder. This regime is preceded by a mixed and an extended regime at weaker disorder strengths, with the former hosting both extended and multifractal eigenstates.
  arXiv  Detail & Related papers  (2021-12-18T06:31:51Z)
• Dark solitons in a trapped gas of long-range interacting bosons [0.0]
  We consider the interplay of repulsive short-range and same-sign long-range interactions in the dynamics of dark solitons. We find that single- and multiple-dark-soliton states can exist and are generically robust in the presence of long-range interactions.
  arXiv  Detail & Related papers  (2021-06-27T00:18:04Z)
• Long-lived period-doubled edge modes of interacting and disorder-free Floquet spin chains [68.8204255655161]
  We show that even in the absence of disorder, and in the presence of bulk heating, $pi$ edge modes are long lived. A tunneling estimate for the lifetime is obtained by mapping the stroboscopic time-evolution to dynamics of a single particle in Krylov subspace.
  arXiv  Detail & Related papers  (2021-05-28T12:13:14Z)
• Decoherence-free mechanism to protect long-range entanglement against decoherence [0.0]
  We report the creation of long-range entanglement in dynamics both in the absence and presence of system-bath interactions. We find that for a fixed range of entanglement, there exists a critical value of interaction length which leads to the maximum freezing terminal.
  arXiv  Detail & Related papers  (2020-12-23T18:48:36Z)
• Quantum aging and dynamical universality in the long-range $O(N\to\infty)$ model [0.0]
  Quantum quenches to or near criticality give rise to the phenomenon of textitaging, manifested by glassy-like dynamics at short times and far from equilibrium. Motivated by the ubiquitous long-range interactions in emerging experimental platforms, it is vital to study quantum aging in such settings.
  arXiv  Detail & Related papers  (2020-08-19T18:00:00Z)

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.