AI 中文总结
该研究在非无序一维晶格中，利用相位可调的非局域键耗散，无需改变哈密顿量即可选择局域或扩展稳态，为非无序晶格的态制备与输运调控提供了新途径。
AI 中文摘要
耗散通常被视为抑制量子干涉和局域化的退相干源，而本文表明，在严格非无序的一维晶格中，经过适当设计的耗散可用于选择局域或扩展态。该底层纯净晶格具有空间非均匀的跳跃，同时支持扩展的体态和局域的边界态，包括连续谱中的代数局域束缚态。我们引入具有可调相对相位的非局域键跳算符，发现该相位会选择性地偏爱具有不同空间相位关联的本征态。因此，无需改变任何哈密顿量参数，即可将长时间密度矩阵引导至由局域或扩展哈密顿量本征态主导的子空间。通过与耗散通道相位匹配、间距为$l$的格点对的占比，可量化这种选择的微观起源。我们还通过量子保真度表征了耗散猝灭，表明耗散移除后，稳态的选定特性仍可维持。本研究确立了相位选择性键耗散作为非无序晶格中可控态制备与输运调控的一种途径。
英文摘要
Dissipation is usually regarded as a source of decoherence that suppresses quantum interference and localization. Here we show that suitably engineered dissipation can instead be used to select localized or extended states in a strictly non-disordered one-dimensional lattice. The underlying clean lattice has spatially inhomogeneous hopping and supports both extended bulk states and localized boundary states, including an algebraically localized bound state in the continuum. We introduce a nonlocal bond jump operator with a tunable relative phase and show that this phase selectively favors eigenstates with different spatial phase correlations. As a result, the long-time density matrix can be steered toward sectors dominated by localized or extended Hamiltonian eigenstates without changing any Hamiltonian parameter. The microscopic origin of the selection is quantified by the fraction of site pairs separated by a distance $l$ that are phase matched with the dissipative channel. We further characterize the dissipative quench through the quantum fidelity and show that the selected character of the steady state can persist after the dissipation is removed. Our results establish phase-selective bond dissipation as a route to controllable state preparation and transport manipulation in non-disordered lattices.
