Coherence and Rydberg Blockade of Atomic Ensemble Qubits

被引：76

作者：

Ebert, M. ^{[1
]}

Kwon, M. ^{[1
]}

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

Saffman, M. ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 115卷 / 09期

基金：

美国国家科学基金会;

关键词：

LINEAR OPTICS; QUANTUM; EXCITATION; REGIME;

D O I：

10.1103/PhysRevLett.115.093601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate vertical bar W > state encoding of multiatom ensemble qubits. Using optically trapped Rb atoms, the T-2 coherence time is 2.6(3) ms for (N) over bar = 7.6 atoms and scales approximately inversely with the number of atoms. Strong Rydberg blockade between two ensemble qubits is demonstrated with a fidelity of 0.89(1), and with a fidelity of similar to 1.0 when postselected on a control ensemble excitation. These results are a significant step towards deterministic entanglement of atomic ensembles.

引用

页数：5

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