Observation of Floquet States in a Strongly Driven Artificial Atom

Chunqing Deng, Jean Luc Orgiazzi, Feiruo Shen, Sahel Ashhab, Adrian Lupascu

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Abstract

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.

Original languageEnglish
Article number133601
JournalPhysical Review Letters
Volume115
Issue number3
DOIs
Publication statusPublished - 24 Sep 2015

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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