A quantum walk in phase space with resonator-assisted double quantum dots

被引：3

作者：

Bian, Zhi-Hao ^{[1
]}

Qin, Hao ^{[1
]}

Zhan, Xiang ^{[1
]}

Li, Jian ^{[1
]}

Xue, Peng ^{[1
]}

机构：

[1] Southeast Univ, Dept Phys, Nanjing 211189, Peoples R China

来源：

CHINESE PHYSICS B | 2016年 / 25卷 / 02期

基金：

中国国家自然科学基金;

关键词：

quantum walks; double quantum dots; EXPERIMENTAL REALIZATION;

D O I：

10.1088/1674-1056/25/2/020307

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We implement a quantum walk in phase space with a new mechanism based on the superconducting resonator-assisted double quantum dots. By analyzing the hybrid system, we obtain the necessary factors implementing a quantum walk in phase space: the walker, coin, coin flipping and conditional phase shift. The coin flipping is implemented by adding a driving field to the resonator. The interaction between the quantum dots and resonator is used to implement conditional phase shift. Furthermore, we show that with different driving fields the quantum walk in phase space exhibits a ballistic behavior over 25 steps and numerically analyze the factors influencing the spreading of the walker in phase space.

引用

页数：5

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