Observation of quantum oscillations in the extreme weak anharmonic limit

被引：0

作者：

Thery, A.

Neukelmance, B. ^{[1
]}

Hue, B. ^{[1
]}

Legrand, W. ^{[1
]}

Jarjat, L. ^{[1
]}

Craquelin, J. ^{[1
]}

Delbecq, M. R. ^{[1
,2
,3
]}

Kontos, T. ^{[1
,2
]}

机构：

[1] Univ Paris Diderot, Sorbonne Univ, Univ PSL, Lab Phys,Ecole Normale Super,ENS,CNRS,Sorbonne Par, Paris, France

[2] PSL Univ, Sorbonne Univ, CNRS, ESPCI Paris,Lab Phys & Etud Mat, Paris, France

[3] Inst Univ France IUF, Paris, France

来源：

PHYSICAL REVIEW B | 2024年 / 109卷 / 06期

关键词：

GRANULAR ALUMINUM; ELECTRODYNAMICS;

D O I：

10.1103/PhysRevB.109.064505

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate a granular aluminium quantum circuit with an anharmonicity of the order of its decoherence rate in a three-dimensional microwave cavity. We perform single qubitlike manipulations such as Rabi oscillations and Ramsey fringes. Our findings, supported by quantitative numerical modeling, show that a very weakly anharmonic oscillator can also display quantum oscillations outside the qubit regime. These oscillations are hard to disambiguate from qubit oscillations in time domain measurements for a single driving frequency. This sheds light on recent findings for material superconducting quantum bits. Our platform shows in addition large magnetic field resilience which could find applications for quantum enhanced dark matter search.

引用

页数：7

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