Entanglement Negativity at Measurement-Induced Criticality
Entanglement Negativity at Measurement-Induced Criticality
复制标题
测量引起的临界状态下的纠缠负性
DOI:
10.1103/prxquantum.2.030313
复制
发表时间:
2020
期刊:
影响因子:
9.7
通讯作者:
M. Fisher
中科院分区:
文献类型:
--
作者:
Shengqi Sang;Yaodong Li;Tianci Zhou;Xiao Chen;T. Hsieh;M. Fisher
We propose entanglement negativity as a fine-grained probe of measurement-induced criticality. We motivate this proposal in stabilizer states, where for two disjoint subregions, comparing their "mutual negativity" and their mutual information leads to a precise distinction between bipartite and multipartite entanglement. In a measurement-only stabilizer circuit that maps exactly to two-dimensional critical percolation, we show that the mutual information and the mutual negativity are governed by boundary conformal fields of different scaling dimensions at long distances. We then consider a class of "hybrid" circuit models obtained by perturbing the measurement-only circuit with unitary gates of progressive levels of complexity. While other critical exponents vary appreciably for different choices of unitary gate ensembles at their respective critical points, the mutual negativity has scaling dimension 3 across remarkably many of the hybrid circuits, which is notably different from that in percolation. We contrast our results with limiting cases where a geometrical minimal-cut picture is available.
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影响因子:
3.7
作者:
Zabalo, Aidan;Gullans, Michael J.;Wilson, Justin H.;Gopalakrishnan, Sarang;Huse, David A.;Pixley, J. H.
通讯作者:
Pixley, J. H.
影响因子:
5.4
作者:
P. Nguyen;T. Devakul;Matthew G. Halbasch;M. Zaletel;Brian Swingle
通讯作者:
P. Nguyen;T. Devakul;Matthew G. Halbasch;M. Zaletel;Brian Swingle
DOI:
--
发表时间:
2019
期刊:
arXiv e-prints
影响因子:
--
作者:
Dai Zhehao
通讯作者:
Dai Zhehao
影响因子:
3.7
作者:
R. Vasseur;A. Potter;Yi-Zhuang You;A. Ludwig
通讯作者:
R. Vasseur;A. Potter;Yi-Zhuang You;A. Ludwig
影响因子:
19.6
作者:
Lavasani, Ali;Alavirad, Yahya;Barkeshli, Maissam
通讯作者:
Barkeshli, Maissam