Observation of coherent oscillations in a single electron spin

被引：846

作者：

Jelezko, F ^{[1
]}

Gaebel, T ^{[1
]}

Popa, I ^{[1
]}

Gruber, A ^{[1
]}

Wrachtrup, J ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Phys 3, D-7000 Stuttgart, Germany

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.92.076401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Rabi nutations and Hahn echo modulation of a single electron spin in a single defect center have been observed. The coherent evolution of the spin quantum state is followed via optical detection of the spin state. Coherence times up to several microseconds at room temperature have been measured. Optical excitation of the spin states leads to decoherence. Quantum beats between electron spin transitions in a single spin Hahn echo experiment are observed. A closer analysis reveals that beats also result from the hyperfine coupling of the electron spin to a single N-14 nuclear spin. The results are analyzed in terms of a density matrix approach of an electron spin interacting with two oscillating fields.

引用

页码：764011 / 764014

页数：4

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