Quantum computation with linear optics

被引：0

作者：

Fitch, MJ ^{[1
]}

Donegan, MM ^{[1
]}

Jacobs, BC ^{[1
]}

Pittman, TB ^{[1
]}

Franson, JD ^{[1
]}

机构：

[1] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA

来源：

QUANTUM INFORMATION AND COMPUTATION | 2003年 / 5105卷

关键词：

linear-optics; quantum computing; logic; CNOT; quantum memory; detector; photon; downconversion;

D O I：

10.1117/12.488527

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

Ever since Knill, Laflamme and Milburn [Nature (London) 409, 46 (2001)] showed that nondeterministic quantum logic operations could be performed with linear optical elements, additional photons (ancilla) and projective measurements, the idea of linear-optics quantum computation has attracted considerable interest. Our group has recently demonstrated several devices of this kind. We give an overview of recent experimental results, including the quantum parity check, the destructive controlled-NOT, and a cyclical quantum memory. The need for high-efficiency detection of single photons and for detectors capable of distinguishing photon number will be discussed. Some experimental improvements towards meeting that need will be presented.

引用

页码：178 / 184

页数：7

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