Multiphoton dressing of an anharmonic superconducting many-level quantum circuit

被引：45

作者：

Braumueller, Jochen ^{[1
]}

Cramer, Joel ^{[1
]}

Schloer, Steffen ^{[1
]}

Rotzinger, Hannes ^{[1
]}

Radtke, Lucas ^{[1
]}

Lukashenko, Alexander ^{[1
]}

Yang, Ping ^{[1
]}

Skacel, Sebastian T. ^{[1
]}

Probst, Sebastian ^{[1
]}

Marthaler, Michael ^{[2
]}

Guo, Lingzhen ^{[2
]}

Ustinov, Alexey V. ^{[1
,3
]}

Weides, Martin ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Inst Phys, D-76131 Karlsruhe, Germany

[2] Karlsruhe Inst Technol, Inst Theoret Festkorperphys, D-76131 Karlsruhe, Germany

[3] Natl Univ Sci & Technol MISIS, Moscow 119049, Russia

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.91.054523

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the investigation of a superconducting anharmonic multilevel circuit that is coupled to a harmonic readout resonator. We observe multiphoton transitions via virtual energy levels of our system up to the fifth excited state. The back-action of these higher-order excitations on our readout device is analyzed quantitatively and demonstrated to be in accordance with theoretical expectation. By applying a strong microwave drive we achieve multiphoton dressing within our anharmonic circuit which is dynamically coupled by a weak probe tone. The emerging higher-order Rabi sidebands and associated Autler-Townes splittings involving up to five levels of the investigated anharmonic circuit are observed. Experimental results are in good agreement with master-equation simulations.

引用

页数：9

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