Electron spin resonance detected by a superconducting qubit

被引：32

作者：

Kubo, Y. ^{[1
]}

Diniz, I. ^{[2
]}

Grezes, C. ^{[1
]}

Umeda, T. ^{[3
]}

Isoya, J. ^{[3
]}

Sumiya, H. ^{[4
]}

Yamamoto, T. ^{[5
]}

Abe, H. ^{[5
]}

Onoda, S. ^{[5
]}

Ohshima, T. ^{[5
]}

Jacques, V. ^{[6
]}

Dreau, A. ^{[6
]}

Roch, J-F. ^{[6
]}

Auffeves, A. ^{[2
]}

Vion, D. ^{[1
]}

Esteve, D. ^{[1
]}

Bertet, P. ^{[1
]}

机构：

[1] CEA Saclay, Quantron Grp, Serv Phys Etat Condense, CNRS,URA 2464, F-91191 Gif Sur Yvette, France

[2] CNRS, Inst Neel, F-38042 Grenoble, France

[3] Univ Tsukuba, Res Ctr Knowledge Communities, Tsukuba, Ibaraki 3058550, Japan

[4] Sumitomo Elect Ind Ltd, Itami, Hyogo 664001, Japan

[5] Japan Atom Energy Agcy, Takasaki, Gunma 3701292, Japan

[6] Ecole Normale Super, Lab Phys Quant & Mol, CNRS, UMR 8537, F-94235 Cachan, France

来源：

PHYSICAL REVIEW B | 2012年 / 86卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.86.064514

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new method for detecting the magnetic resonance of electronic spins at low temperature is demonstrated. It consists in measuring the signal emitted by the spins with a superconducting qubit that acts as a single-microwave-photon detector, resulting in an enhanced sensitivity. We implement such an electron-spin resonance spectrometer using a hybrid quantum circuit in which a transmon qubit is coupled to a spin ensemble consisting of nitrogen-vacancy (NV) centers in diamond. With this setup we measure the NV center absorption spectrum at 30 mK at an excitation level of similar to 15 mu(B) out of an ensemble of 10(11) spins.

引用

页数：6

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