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Indexed by:期刊论文

Date of Publication:2017-05-25

Journal:PHYSICS LETTERS A

Included Journals:SCIE

Volume:381

Issue:20

Page Number:1727-1731

ISSN No.:0375-9601

Key Words:Qutrits; Quantum state transfer; Circuit QED

Abstract: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.