Many-Body Entanglement in Short-Range Interacting Fermi Gases for Metrology

被引：5
|
作者：
Lucchesi, Leonardo
Chiofalo, Maria Luisa [1 ,2 ]
机构：
[1] Univ Colorado, JILA, 440 UCB, Boulder, CO 80309 USA
[2] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA
来源：
PHYSICAL REVIEW LETTERS | 2019年 / 123卷 / 06期
基金：
美国国家科学基金会;
关键词：
MATRIX RENORMALIZATION-GROUP; TRIPLET SUPERCONDUCTIVITY; PRECISION-MEASUREMENT; FISHER INFORMATION; QUANTUM; INTERFEROMETRY; ATOMS; SYSTEM;
D O I：
10.1103/PhysRevLett.123.060406
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We explore many-body entanglement in spinful Fermi gases with short-range interactions, for metrology purposes. We characterize the emerging quantum phases via density-matrix renormalization group simulations and quantify their entanglement content for metrological usability via quantum Fisher information (QFI). Our study establishes a method, promoting QFI to be an order parameter. Short-range interactions reveal to build up metrologically promising entanglement in the XY-ferromagnetic and cluster ordering, the cluster physics being unexplored so far.
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页数：6
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