Noncyclic geometric quantum computation with shortcut to adiabaticity
Noncyclic geometric quantum computation with shortcut to adiabaticity
复制标题
具有绝热性捷径的非循环几何量子计算
DOI:
10.1103/physreva.101.022330
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发表时间:
2019-03
影响因子:
2.9
通讯作者:
Du Yan-Xiong
中科院分区:
文献类型:
--
作者:
Lv Qing-Xian;Liang Zhen-Tao;Liu Hong-Zhi;Liang Jia-Hao;Liao Kai-Yu;Du Yan-Xiong
Fast and robust quantum gates is the cornerstone of fault-tolerance quantum computation. In this paper, we propose to achieve quantum gates based on non-cyclic geometric evolution. Dynamical phase during the evolution is cancelled by spin-echo process and the adiabatic control can be sped up through shortcut to adiabatic manner. Different from geometric gates based on cyclic evolution, the superiority of non-cyclic scheme is that the operation time is proportional to the rotation angle (but not the geometric phase) of quantum state. Therefore, the non-cyclic scheme becomes fairly fast in the case of quantum gates with small rotation angle which will be more insensitive to the decoherence and leakage to the states outside the computational basis. The proposed scheme is also robust against random noise due to the geometric characteristic of projective Hilbert space. Since the refined proposed scheme is fast and robust, it is an particularly suitable way to manipulate the physical systems with weak nonlinearity, such as superconucting systems.
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影响因子:
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作者:
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DOI:
10.1103/physreva.86.062322
发表时间:
2012-04
期刊:
Physical Review A 86, 062322
影响因子:
--
作者:
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通讯作者:
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