Electron spin resonance with up to 20 spin sensitivity measured using a superconducting flux qubit

被引：15

作者：

Budoyo, Rangga P. ^{[1
,2
]}

Kakuyanagi, Kosuke ^{[1
]}

Toida, Hiraku ^{[1
]}

Matsuzaki, Yuichiro ^{[1
,3
]}

Saito, Shiro ^{[1
]}

机构：

[1] NTT Corp, NTT Basic Res Labs, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 2430198, Japan

[2] Natl Univ Singapore, Ctr Quantum Technol, Singapore, Singapore

[3] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki, Japan

来源：

APPLIED PHYSICS LETTERS | 2020年 / 116卷 / 19期

关键词：

NOISE;

D O I：

10.1063/1.5144722

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on electron spin resonance spectroscopy measurements using a superconducting flux qubit with a sensing volume of 6 fl. The qubit is read out using a frequency-tunable Josephson bifurcation amplifier, which leads to an inferred measurement sensitivity of about 20 spins in a 1 s measurement. This sensitivity represents an order of magnitude improvement when compared to flux-qubit schemes using a direct current-superconducting quantum interference device switching readout. Furthermore, noise spectroscopy reveals that the sensitivity is limited by flicker (1=f) flux noise.

引用

页数：5

共 35 条

[31] Observing electron spin resonance between 0.1 and 67GHz at temperatures between 50 mK and 300K using broadband metallic coplanar waveguides [J].

Wiemann, Yvonne ;

Simmendinger, Julian ;

Clauss, Conrad ;

Bogani, Lapo ;

Bothner, Daniel ;

Koelle, Dieter ;

Kleiner, Reinhold ;

Dressel, Martin ;

Scheffler, Marc .

APPLIED PHYSICS LETTERS, 2015, 106 (19)

[32] The flux qubit revisited to enhance coherence and reproducibility [J].

Yan, Fei ;

Gustavsson, Simon ;

Kamal, Archana ;

Birenbaum, Jeffrey ;

Sears, Adam P. ;

Hover, David ;

Gudmundsen, Ted J. ;

Rosenberg, Danna ;

Samach, Gabriel ;

Weber, S. ;

Yoder, Jonilyn L. ;

Orlando, Terry P. ;

Clarke, John ;

Kerman, Andrew J. ;

Oliver, William D. .

NATURE COMMUNICATIONS, 2016, 7

[33] Rotating-frame relaxation as a noise spectrum analyser of a superconducting qubit undergoing driven evolution [J].

Yan, Fei ;

Gustavsson, Simon ;

Bylander, Jonas ;

Jin, Xiaoyue ;

Yoshihara, Fumiki ;

Cory, David G. ;

Nakamura, Yasunobu ;

Orlando, Terry P. ;

Oliver, William D. .

NATURE COMMUNICATIONS, 2013, 4

[34] Spectroscopy of low-frequency noise and its temperature dependence in a superconducting qubit [J].

Yan, Fei ;

Bylander, Jonas ;

Gustavsson, Simon ;

Yoshihara, Fumiki ;

Harrabi, Khalil ;

Cory, David G. ;

Orlando, Terry P. ;

Nakamura, Yasunobu ;

Tsai, Jaw-Shen ;

Oliver, William D. .

PHYSICAL REVIEW B, 2012, 85 (17)

[35] Sensitive spin detection using an on-chip SQUID-waveguide resonator [J].

Yue, G. ;

Chen, L. ;

Barreda, J. ;

Bevara, V. ;

Hu, L. ;

Wu, L. ;

Wang, Z. ;

Andrei, P. ;

Bertaina, S. ;

Chiorescu, I. .

APPLIED PHYSICS LETTERS, 2017, 111 (20)

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