Landau-Zener-Stückelberg interference of microwave-dressed states of a superconducting phase qubit
Guozhu Sun, Xueda Wen, Bo Mao, Yang Yu, Jian Chen, Weiwei Xu, Lin Kang, Peiheng Wu, Siyuan Han
DOI 10.1103/PhysRevB.83.180507 · Physical Review B
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Abstract
We present the observation of Landau-Zener-Stückelberg (LZS) interference of the dressed states arising from an artificial atom, a superconducting phase qubit, interacting with a microwave field. The dependence of LZS interference fringes on various external parameters and the initial state of the qubit agrees quantitatively very well with the theoretical prediction. Such LZS interferometry between the dressed states enables us to control the quantum states of a tetrapartite solid-state system with ease, demonstrating the feasibility of implementing efficient multipartite quantum logic gates with this unique approach.
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