2016/10/11 by Tong Liu, Shao-Jie Xiong, Xiao-Zhi Cao +2 · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1364/ol.40.005602
published as Optics Letters 40, 5602 (2015) · 6 pages, 4 figures
arxiv created 2016/10/11 · arxiv updated 2016/10/19
Compared with a qubit, a qutrit (i.e., three-level quantum system) has a larger Hilbert space and thus can be used to encode more information in quantum information processing and communication. Here, we propose a scheme to transfer an arbitrary quantum state between two flux qutrits coupled to two resonators. This scheme is simple because it only requires two basic operations. The state-transfer operation can be performed fast because of using resonant interactions only. Numerical simulations show that high-fidelity transfer of quantum states between the two qutrits is feasible with current circuit-QED technology. This scheme is quite general and can be applied to accomplish the same task for other solid-state qutrits coupled to resonators.