Simulating local measurements on a quantum many-body system with stochastic matrix product states

被引：8

作者：

Gammelmark, Soren ^{[1
]}

Molmer, Klaus ^{[1
]}

机构：

[1] Univ Aarhus, Lundbeck Fdn Theoret Ctr Quantum Syst Res, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

来源：

PHYSICAL REVIEW A | 2010年 / 81卷 / 01期

关键词：

Compendex;

D O I：

10.1103/PhysRevA.81.012120

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate how to simulate both discrete and continuous stochastic evolutions of a quantum many-body system subject to measurements using matrix product states. A particular, but generally applicable, measurement model is analyzed and a simple representation in terms of matrix product operators is found. The technique is exemplified by numerical simulations of the antiferromagnetic Heisenberg spin-chain model subject to various instances of the measurement model. In particular, we focus on local measurements with small support and nonlocal measurements, which induce long-range correlations.

引用

页数：6

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