Towards Scalable Linear-Optical Quantum Computers

被引：8

作者：

Dowling, J. P. ^{[1
,4
]}

Franson, J. D. ^{[2
]}

Lee, H. ^{[1
]}

Milburn, G. J. ^{[3
]}

机构：

[1] CALTECH, Jet Prop Lab, Quantum Comp Technol Grp, Sect 367, Pasadena, CA 91109 USA

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

[3] Univ Queensland, Ctr Quantum Comp Technol, Brisbane, Qld 4072, Australia

[4] Louisiana State Univ, Dept Phys, Baton Rouge, LA 70803 USA

来源：

QUANTUM INFORMATION PROCESSING | 2004年 / 3卷 / 1-5期

关键词：

Linear optics; Logic gates; Single photon; Quantum memory; Quantum repeater;

D O I：

10.1007/s11128-004-9419-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Scalable quantum computation with linear optics was considered to be impossible due to the lack of efficient two-qubit logic gates, despite the ease of implementation of one-qubit gates. Two-qubit gates necessarily need a non-linear interaction between the two photons, and the efficiency of this non-linear interaction is typically very small in bulk materials. However, it has recently been shown that this barrier can be circumvented with effective non-linearities produced by projective measurements, and with this work linear-optical quantum computing becomes a new avenue towards scalable quantum computation. We review several issues concerning the principles and requirements of this scheme.

引用

页码：205 / 213

页数：9

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