Abstract
We present an efficient scheme for the generation of NOON states of photons in circuit QED assisted by a superconducting charge qutrit. It is completed with two kinds of manipulations, that is, the resonant operation on the qutrit and the resonator, and the single-qubit operation on the qutrit, and they both are high-fidelity operations. Compared with the one by a superconducting transmon qutrit proposed by Su et al. (Sci Rep 4:3898, 2014), our scheme does not require to maintain the qutrit in the third excited state with a long time, which relaxes the difficulty of its implementation in experiment. Moreover, the level anharmonicity of a charge qutrit is larger and it is better for us to tune the different transitions of the charge qutrit resonant to the resonator, which makes our scheme faster than others.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (11174039) and NECT-11-0031.
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Hua, M., Tao, MJ. & Deng, FG. Efficient generation of NOON states on two microwave-photon resonators. Chin. Sci. Bull. 59, 2829–2834 (2014). https://doi.org/10.1007/s11434-014-0443-y
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DOI: https://doi.org/10.1007/s11434-014-0443-y