Minimal and robust composite two-qubit gates with Ising-type interaction

被引：11

作者：

Ichikawa, Tsubasa ^{[1
]}

Guengoerdue, Utkan ^{[1
]}

Bando, Masamitsu ^{[1
]}

Kondo, Yasushi ^{[1
,2
]}

Nakahara, Mikio ^{[1
,2
]}

机构：

[1] Kinki Univ, Res Ctr Quantum Comp, Interdisciplinary Grad Sch Sci & Engn, Higashiosaka, Osaka 5778502, Japan

[2] Kinki Univ, Dept Phys, Higashiosaka, Osaka 5778502, Japan

来源：

PHYSICAL REVIEW A | 2013年 / 87卷 / 02期

关键词：

26;

D O I：

10.1103/PhysRevA.87.022323

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We construct a minimal robust controlled-NOT gate with an Ising-type interaction by which elementary two-qubit gates are implemented. It is robust against inaccuracy of the coupling strength and the obtained quantum circuits are constructed with the minimal number (N = 3) of elementary two-qubit gates and several one-qubit gates. It is noteworthy that all the robust circuits can be mapped to one-qubit circuits robust against a pulse length error. We also prove that a minimal robust SWAP gate cannot be constructed with N = 3 but requires N = 6 elementary two-qubit gates. DOI: 10.1103/PhysRevA.87.022323

引用

页数：6

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