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

doi:10.1088/1674-1056/25/2/020307

中国物理B ›› 2016, Vol. 25 ›› Issue (2): 20307-020307.doi: 10.1088/1674-1056/25/2/020307

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

Zhi-Hao Bian(边志浩), Hao Qin(秦豪), Xiang Zhan(詹翔), Jian Li(李剑), Peng Xue(薛鹏)

Department of Physics, Southeast University, Nanjing 211189, China

收稿日期:2015-08-11 修回日期:2015-10-04 出版日期:2016-02-05 发布日期:2016-02-05
通讯作者: Peng Xue E-mail:gnep.eux@gmail.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11474049) and CAST Innovation Fund.

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

Zhi-Hao Bian(边志浩), Hao Qin(秦豪), Xiang Zhan(詹翔), Jian Li(李剑), Peng Xue(薛鹏)

Department of Physics, Southeast University, Nanjing 211189, China

Received:2015-08-11 Revised:2015-10-04 Online:2016-02-05 Published:2016-02-05
Contact: Peng Xue E-mail:gnep.eux@gmail.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11474049) and CAST Innovation Fund.

摘要/Abstract

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.

关键词: quantum walks, double quantum dots

Abstract:

Key words: quantum walks, double quantum dots

中图分类号: (Quantum algorithms, protocols, and simulations)

03.67.Ac

42.50.Pq (Cavity quantum electrodynamics; micromasers) 74.50.+r (Tunneling phenomena; Josephson effects)

边志浩, 秦豪, 詹翔, 李剑, 薛鹏. A quantum walk in phase space with resonator-assisted double quantum dots[J]. 中国物理B, 2016, 25(2): 20307-020307.

Zhi-Hao Bian(边志浩), Hao Qin(秦豪), Xiang Zhan(詹翔), Jian Li(李剑), Peng Xue(薛鹏). A quantum walk in phase space with resonator-assisted double quantum dots[J]. Chin. Phys. B, 2016, 25(2): 20307-020307.

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

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

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