Nonleaky and accelerated population transfer in a transmon qutrit
Xiao-Jing Lu, M. Li, Z. Y. Zhao, Chun-Li Zhang, Hong-Pei Han, Zhi-Bo Feng, Yun-Qing Zhou
DOI 10.1103/PhysRevA.96.023843 · Physical Review A
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Abstract
We propose a theoretical scheme for implementing nonleaky and accelerated population transfer with a transmon qutrit. For a transmon-regime artificial atom with weak level anharmonicity, the leakage effects on the target population transfer are considerable. Allowed by the level-transition rule, a two-photon resonant interaction can be obtained between the qutrit and microwave drivings. In the regime of large detuning, by adopting the technique of invariant-based inverse engineering, the population transfer with no leakage errors can be sped up drastically when compared with the adiabatic operation. Moreover, the accelerated operation is highly robust against decoherence effects. Thanks to these distinctive advantages, the proposed protocol could offer a promising avenue to optimal quantum operations on transmon artificial atoms.
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