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论文类型：期刊论文

发表时间：2017-05-25

发表刊物：PHYSICS LETTERS A

收录刊物：SCIE

卷号：381

期号：20

页面范围：1727-1731

ISSN号：0375-9601

关键字：Qutrits; Quantum state transfer; Circuit QED

摘要：Qutrits (i.e., three-level quantum systems) can be used to achieve many quantum information and communication tasks due to their large Hilbert spaces. In this work, we propose a scheme to transfer an unknown quantum state between two flux qutrits coupled to two superconducting coplanar waveguide resonators. The quantum state transfer can be deterministically achieved without measurements. Because resonator photons are virtually excited during the operation time, the decoherences caused by the resonator decay and the unwanted inter-resonator crosstalk are greatly suppressed. Moreover, our approach can be adapted to other solid-state qutrits coupled to circuit resonators. Numerical simulations show that the high-fidelity transfer of quantum state between the two qutrits is feasible with current circuit QED technology. (C) 2017 Published by Elsevier B.V.