Demonstration of a Neutral Atom Controlled-NOT Quantum Gate

被引：677

作者：

Isenhower, L. ^{[1
]}

Urban, E. ^{[1
]}

Zhang, X. L. ^{[1
]}

Gill, A. T. ^{[1
]}

Henage, T. ^{[1
]}

Johnson, T. A. ^{[1
]}

Walker, T. G. ^{[1
]}

Saffman, M. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 01期

基金：

美国国家科学基金会;

关键词：

CONTROLLED COLLISIONS; RYDBERG BLOCKADE; ENTANGLEMENT;

D O I：

10.1103/PhysRevLett.104.010503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first demonstration of a CNOT gate between two individually addressed neutral atoms. Our implementation of the CNOT uses Rydberg blockade interactions between neutral atoms held in optical traps separated by >8 mu m. Using two different gate protocols we measure CNOT fidelities of F = 0.73 and 0.72 based on truth table probabilities. The gate was used to generate Bell states with fidelity F = 0.48 +/- 0.06. After correcting for atom loss we obtain an a posteriori entanglement fidelity of F = 0.58.

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页数：4

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