Experimental demonstration of error-insensitive approximate universal-NOT gates

被引：1

作者：

Lee, Sang Min ^{[1
]}

Bang, Jeongho ^{[2
]}

Kim, Heonoh ^{[1
]}

Jeong, Hyunseok ^{[2
]}

Lee, Jinhyoung ^{[3
]}

Moon, Han Seb ^{[1
]}

机构：

[1] Pusan Natl Univ, Dept Phys, Pusan 609735, South Korea

[2] Seoul Natl Univ, Dept Phys & Astron, Ctr Macroscop Quantum Control, Seoul 151747, South Korea

[3] Hanyang Univ, Dept Phys, Seoul 133791, South Korea

来源：

PHYSICAL REVIEW A | 2014年 / 89卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

Random errors;

D O I：

10.1103/PhysRevA.89.052329

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose and experimentally demonstrate an approximate universal-NOT (UNOT) operation that is robust against operational errors. In our proposal, the UNOT operation is composed of stochastic unitary operations represented by the vertices of regular polyhedrons. The operation is designed to be robust against random operational errors by increasing the number of unitary operations (i.e., reference axes). Remarkably, no increase in the total number of measurements nor additional resources are required to perform the UNOT operation. Our method can be applied in general to reduce operational errors to an arbitrary degree of precision when approximating any antiunitary operation in a stochastic manner.

引用

页数：7

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