Landau-Zener-Stuckelberg interferometry of a single electron charge qubit

被引：87

作者：

Stehlik, J. ^{[1
]}

Dovzhenko, Y. ^{[1
]}

Petta, J. R. ^{[1
,2
]}

Johansson, J. R. ^{[3
]}

Nori, F. ^{[3
,4
]}

Lu, H. ^{[5
]}

Gossard, A. C. ^{[5
]}

机构：

[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[2] Princeton Univ, Princeton Inst Sci & Technol Mat PRISM, Princeton, NJ 08544 USA

[3] RIKEN, Adv Sci Inst, Wako, Saitama 3510198, Japan

[4] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[5] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

PHYSICAL REVIEW B | 2012年 / 86卷 / 12期

基金：

美国国家科学基金会;

关键词：

SPONTANEOUS EMISSION; QUANTUM; SPIN; MANIPULATION; DISSIPATION;

D O I：

10.1103/PhysRevB.86.121303

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We perform Landau-Zener-Stuckelberg interferometry on a single electron GaAs charge qubit by repeatedly driving the system through an avoided crossing. We observe coherent destruction of tunneling, where periodic driving with specific amplitudes inhibits current flow. We probe the quantum dot occupation using a charge detector, observing oscillations in the qubit population resulting from the microwave driving. At a frequency of 9 GHz we observe excitation processes driven by the absorption of up to 17 photons. Simulations of the qubit occupancy are in good agreement with the experimental data.

引用

页数：5

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