Observation of Floquet States in a Strongly Driven Artificial Atom

被引：103

作者：

Deng, Chunqing ^{[1
,2
]}

Orgiazzi, Jean-Luc ^{[2
,3
]}

Shen, Feiruo ^{[1
,2
]}

Ashhab, Sahel ^{[4
]}

Lupascu, Adrian ^{[1
,2
]}

机构：

[1] Univ Waterloo, Dept Phys & Astron, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada

[2] Univ Waterloo, Waterloo Inst Nanotechnol, Waterloo, ON N2L 3G1, Canada

[3] Univ Waterloo, Dept Elect & Comp Engn, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada

[4] Qatar Fdn, HBKU, QEERI, Doha, Qatar

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 115卷 / 13期

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会;

关键词：

SUPERCONDUCTING CIRCUITS; QUANTUM; QUBIT; INTERFEROMETRY; DYNAMICS; PULSES; TIME;

D O I：

10.1103/PhysRevLett.115.133601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present experiments on the driven dynamics of a two-level superconducting artificial atom. The driving strength reaches 4.78 GHz, significantly exceeding the transition frequency of 2.288 GHz. The observed dynamics is described in terms of quasienergies and quasienergy states, in agreement with Floquet theory. In addition, we observe the role of pulse shaping in the dynamics, as determined by nonadiabatic transitions between Floquet states, and we implement subnanosecond single-qubit operations. These results pave the way to quantum control using strong driving with applications in quantum technologies.

引用

页数：5

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