Parametric control of a superconducting flux qubit

被引：43

作者：

Saito, S ^{[1
]}

Meno, T

Ueda, M

Tanaka, H

Semba, K

Takayanagi, H

机构：

[1] NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

[2] CREST, Japan Sci & Technol Agcy, Kawaguchi, Saitama 3320012, Japan

[3] NTT Adv Technol Corp, Atsugi, Kanagawa 2430198, Japan

[4] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.96.107001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Parametric control of a superconducting flux qubit has been achieved by using two-frequency microwave pulses. We have observed Rabi oscillations stemming from parametric transitions between the qubit states when the sum of the two microwave frequencies or the difference between them matches the qubit Larmor frequency. We have also observed multiphoton Rabi oscillations corresponding to one- to four-photon resonances by applying single-frequency microwave pulses. The parametric control demonstrated in this work widens the frequency range of microwaves for controlling the qubit and offers a high quality testing ground for exploring nonlinear quantum phenomena of macroscopically distinct states.

引用

页数：4

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