We investigate the acceleration of an adiabatic process with the same survival probability of the ground state by sweeping a parameter nonlinearly, fast in the wide gap region and slowly in the narrow gap region, in contrast to the usual linear sweeping. We find the expected acceleration both in the Landau-Zener tunneling model and in the adiabatic quantum computing model for factorizing the number N = 21.
【英文摘要】
We investigate the acceleration of an adiabatic process with the same survival probability of the ground state by sweeping a parameter nonlinearly, fast in the wide gap region and slowly in the narrow gap region, in contrast to the usual linear sweeping. We find the expected acceleration both in the Landau–Zener tunneling model and in the adiabatic quantum computing model for factorizing the number N = 21.
【基金】
supported by the National Natural Science Foundation of China (Grant No. 10904017);
the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20090071120013);
the Shanghai Pujiang Program, China (Grant No. 10PJ1401300)
【更新日期】
2013-10-10
【分类号】
O413
【正文快照】
1. Introduction Due to its robustness against noises, adiabatic quan- tum computation (AQC) is one of the promising experi- mentally feasible schemes. [1–7] However, the average energy gap between two adjacent eigenstates of a quantum com- puter decrease
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