Cui Xiao-Dong, Zheng Yujun
School of Physics, Shandong University, Jinan 250100, China.
J Chem Phys. 2015 Jun 7;142(21):214311. doi: 10.1063/1.4922160.
We propose a feasible scheme to implement a phase-shift gate ((1 0) (0 eiγ)) based on a two-state single molecule in a solid matrix, where γ is a geometric phase controlled through a fast on-resonant laser field and a slow off-resonant radio-frequency field. In our scheme, a non-Hermitian quantum model is employed to characterize the single molecule in a solid matrix including the spontaneous decay effect. By the coupling between the radio-frequency field and the two-state permanent dipole difference resulting from the solid matrix, the spontaneous decay fatal to the preservation of geometric phase can be effectively suppressed for a considerably long waiting time.
我们提出了一种可行的方案，用于在固体基质中基于双态单分子实现一个相移门（(1 0) (0 eiγ)），其中γ是通过快速共振激光场和缓慢非共振射频场控制的几何相位。在我们的方案中，采用了一个非厄米量子模型来表征包含自发衰变效应的固体基质中的单分子。通过射频场与固体基质产生的双态永久偶极矩差之间的耦合，对于相当长的等待时间，可以有效地抑制对几何相位保存至关重要的自发衰变。
