Demonstration of nondeterministic quantum logic operations using linear optical elements

被引：163

作者：

Pittman, TB ^{[1
]}

Jacobs, BC ^{[1
]}

Franson, JD ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.88.257902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Knill, Laflamme, and Milburn [Nature (London) 409, 46 (2001)] recently showed that nondeterministic quantum logic operations could be performed using linear optical elements, additional photons (ancilla), and postselection based on the output of single-photon detectors. Here we report the experimental demonstration of two logic devices of this kind, a destructive controlled-NOT (CNOT) gate and a quantum parity check. These two devices can be combined with a pair of entangled photons to implement a conventional (nondestructive) CNOT that succeeds with a probability of 1/4.

引用

页数：4

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