NMR Quantum Simulation of Localization Effects Induced by Decoherence

被引：82

作者：

Alvarez, Gonzalo A. ^{[1
]}

Suter, Dieter ^{[1
]}

机构：

[1] Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 23期

关键词：

COMPUTATION; SOLIDS;

D O I：

10.1103/PhysRevLett.104.230403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The loss of coherence in quantum mechanical superposition states limits the time for which quantum information remains useful. Similarly, it limits the distance over which quantum information can be transmitted. Here, we investigate in a nuclear spin-based quantum simulator, the localization of the size of spin clusters that are generated by a Hamiltonian driving the transmission of information, while a variable-strength perturbation counteracts the spreading. We find that the system reaches a dynamic equilibrium size, which decreases with the square of the perturbation strength.

引用

页数：4

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