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Probing scrambling and topology via random measurements.docx
发布时间:2019-02-26 浏览:

报告题目:Probing scrambling and topology via random measurements

报告人:Benoit Vermersch (奥地利因斯布鲁克大学)

报告时间:2019226 星期二下午4:00-5:00

报告地点:激光光谱研究所三层报告厅

报告简介:Recently, statistical correlations between randomized measurements have emerged as a new tool to probe entanglement properties of many-body quantum states [1]. After a general introduction showing some recent experimental demonstrations [2], I will discuss two new applications: First, I will present a protocol to measure out-of-time ordered correlation functions (OTOCs) and ``scrambling'', without the necessity of implementing time reversed operations or ancilla degrees of freedom [3]. I will then show how the same tools can be used to experimentally classify symmetry protected topological (SPT) phases in one-dimensional spin systems [4].

[1] Phys. Rev. Lett. 120, 050406 (2018)

[2] arXiv:1806.05747

[3] arxiv:1807.09087

[4] A. Elben, BV, J. Yu, G. Zhu, M. Hafezi, and P. Zoller (in preparation)

报告人简介:Benoit Vermersch2013年在法国里尔大学Jean-Claude Garreau教授指导下获得博士学位,现为奥地利因斯布鲁克大学Peter Zoller 教授组高级研究员。他的主要研究领域包括原子分子物理、量子光学、量子模拟与测量、量子信息网络等,近期在PRLNature Physics等期刊发表了系列工作。