Protocol and quantum circuit for implementing the N-bit discrete quantum Fourier transform in cavity QED

被引：14

作者：

Wang, Hong-Fu ^{[1
,2
]}

Shao, Xiao-Qiang ^{[1
]}

Zhao, Yong-Fang ^{[1
]}

Zhang, Shou ^{[1
,2
]}

Yeon, Kyu-Hwang ^{[3
,4
]}

机构：

[1] Harbin Inst Technol, Dept Phys, Ctr Condensed Matter Sci & Technol, Harbin 150001, Heilongjiang, Peoples R China

[2] Yanbian Univ, Coll Sci, Dept Phys, Yanji 133002, Jilin, Peoples R China

[3] Chungbuk Natl Univ, Coll Nat Sci, Dept Phys, Cheongju 361763, Chungbuk, South Korea

[4] Chungbuk Natl Univ, Coll Nat Sci, Program Device Phys BK21, Cheongju 361763, Chungbuk, South Korea

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2010年 / 43卷 / 06期

基金：

中国国家自然科学基金;

关键词：

ENTANGLEMENT; COMPUTERS;

D O I：

10.1088/0953-4075/43/6/065503

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a simple protocol and quantum circuit for efficient implementation of the N-bit discrete quantum Fourier transform by using two-qubit controlled-NOT gate and SWCZ gate that is a combination of -SWAP and controlled-Z gates in cavity quantum electrodynamics. In this protocol long-lived electronic states in circular Rydberg atoms are used as quantum bits and the one-bit and two-bit quantum gate operations required for implementing the discrete quantum Fourier transform in the quantum circuit can be easily achieved with atom -microwave resonant interaction and atom-cavity interaction occurring only between two nearest-neighbour atoms. We present the detailed experimental procedure and analyse the experimental feasibility.

引用

页数：7

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