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arXiv 2501.18461quant-phcond-mat.other
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在量子处理器上探测非平衡拓扑序

Probing non-equilibrium topological order on a quantum processor

Technical University of Munich(慕尼黑工业大学);Munich Center for Quantum Science and Technology (MCQST)(慕尼黑量子科学与技术中心);Princeton University(普林斯顿大学);Google Research(谷歌研究);Purdue University(普渡大学);University of Nottingham(诺丁汉大学)

M. Will, T. A. Cochran, E. Rosenberg, B. Jobst, N. M Eassa, P. Roushan, M. Knap, A. Gammon-Smith, F. Pollmann

AI总结:

本研究在58比特超导量子处理器上实现Floquet拓扑有序态,通过干涉算法测量体拓扑不变量探测任意子动力学嬗变,为高纠缠非平衡物质相研究提供新途径。

摘要:

多体系统中的非平衡相构成了量子物质的新范式——它们展现出平衡态热力学下原本可能被禁止的动力学特性。在这些非平衡相中,周期驱动(Floquet)系统[1-5]因具有高纠缠度,通常难以用经典方法模拟。我们在超导量子比特阵列上实现了文献[6]中理论提出的Floquet拓扑有序态。我们观测了其手征边缘模的特征动力学,并表征了其涌现的任意子激发。我们设计了一种干涉算法,用于引入并测量体拓扑不变量,以探测规模达58个量子比特的系统中任意子的动力学嬗变。我们的工作表明,量子处理器可为迄今尚未充分探索的高纠缠非平衡物质相领域提供关键见解。

英文摘要:

Out-of-equilibrium phases in many-body systems constitute a new paradigm in quantum matter - they exhibit dynamical properties that may otherwise be forbidden by equilibrium thermodynamics. Among these non-equilibrium phases are periodically driven (Floquet) systems [1-5], which are generically difficult to simulate classically because of their high entanglement. Here we realize a Floquet topologically ordered state theoretically proposed in ref. [6], on an array of superconducting qubits. We image the characteristic dynamics of its chiral edge modes and characterize its emergent anyonic excitations. Devising an interferometric algorithm allows us to introduce and measure a bulk topological invariant to probe the dynamical transmutation of anyons for system sizes up to 58 qubits. Our work demonstrates that quantum processors can provide key insights into the thus-far largely unexplored landscape of highly entangled non-equilibrium phases of matter.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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