频率可调超导量子比特的非绝热门
量子物理
2019-11-22 v1
摘要
我们利用频率可调超导量子比特展示了非绝热两量子比特门，在快至 18 ns 内实现低至 的 Pauli 错误率。这是通过将纠缠参数与泄漏通道中的极小值同步而实现的。该同步在门参数空间中呈现出与模型预测相符的图景，并有助于稳健的调谐。我们用交叉熵基准测试检验了类 iSWAP 门与 CPHASE 门。所提出的方法也可推广至多体操作。
引用
@article{arxiv.1907.02510,
title = {Diabatic gates for frequency-tunable superconducting qubits},
author = {R. Barends and C. M. Quintana and A. G. Petukhov and Yu Chen and D. Kafri and K. Kechedzhi and R. Collins and O. Naaman and S. Boixo and F. Arute and K. Arya and D. Buell and B. Burkett and Z. Chen and B. Chiaro and A. Dunsworth and B. Foxen and A. Fowler and C. Gidney and M. Giustina and R. Graff and T. Huang and E. Jeffrey and J. Kelly and P. V. Klimov and F. Kostritsa and D. Landhuis and E. Lucero and M. McEwen and A. Megrant and X. Mi and J. Mutus and M. Neeley and C. Neill and E. Ostby and P. Roushan and D. Sank and K. J. Satzinger and A. Vainsencher and T. White and J. Yao and P. Yeh and A. Zalcman and H. Neven and V. N. Smelyanskiy and John M. Martinis},
journal= {arXiv preprint arXiv:1907.02510},
year = {2019}
}
备注
Main text: 6 pages, 4 figures. Supplementary: 2 pages, 2 figures