具有动态无序的非相互作用双粒子量子行走中的超输运和超扩散

IF 2.2 3区物理与天体物理 Q1 PHYSICS, MATHEMATICAL

Quantum Information Processing Pub Date : 2025-09-23 DOI:10.1007/s11128-025-04928-x

Larissa F. Gonçalves, Igor E. G. de Oliveira, Rodrigo Caitano, Luan M. T. de Moraes, Pedro Hugo de Figueirêdo, José Ferraz

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引用次数: 0

摘要

在这项工作中，我们报告了在动态无序影响下具有离散时间演化的一维非相互作用双粒子量子行走的理论研究。我们分析了初始波函数的对称性和相位的无序分布对量子行走最终的偶合概率和输运特性的影响。通过调整随机性的无序程度，我们观察到各种扩散状态的出现，从经典随机过程的规则扩散到量子系统的弹道扩散。对于费米子量子行走，有可能超越弹道行为并获得超输运传播状态。

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Hyper-transport and superdiffusion in a non-interacting two-particle quantum walk with dynamic disorder

In this work, we report on a theoretical investigation of one-dimensional non-interacting two-particle quantum walk with discrete-time evolution, under the influence of a dynamic disorder. We have analyzed how the initial wavefunction symmetry and phase disorder distribution affect the quantum walk final coincidence probability and transport characteristics. By adjusting the disorder degree of randomness, we observe the emergence of various diffusion regimes, ranging from regular diffusion, characteristic of a classical stochastic process to the ballistic spreading of quantum systems. For the fermionic quantum walk, it is possible to go beyond the ballistic behavior and obtain the hyper-transport propagation regime.

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来源期刊

Quantum Information Processing 物理-物理：数学物理

CiteScore

4.10

自引率

20.00%

发文量

337

审稿时长

4.5 months

期刊介绍： Quantum Information Processing is a high-impact, international journal publishing cutting-edge experimental and theoretical research in all areas of Quantum Information Science. Topics of interest include quantum cryptography and communications, entanglement and discord, quantum algorithms, quantum error correction and fault tolerance, quantum computer science, quantum imaging and sensing, and experimental platforms for quantum information. Quantum Information Processing supports and inspires research by providing a comprehensive peer review process, and broadcasting high quality results in a range of formats. These include original papers, letters, broadly focused perspectives, comprehensive review articles, book reviews, and special topical issues. The journal is particularly interested in papers detailing and demonstrating quantum information protocols for cryptography, communications, computation, and sensing.