Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, USA.
Opt Lett. 2013 Jun 15;38(12):2110-2. doi: 10.1364/OL.38.002110.
We demonstrate a quantum phase flip gate between two QDs that resonantly couple to plasmonic double-bar resonators with asymmetric coupling strengths. Large coupling strengths can be achieved due to the deep subwavelength mode volumes of the optical modes in plasmonic double-bar resonators. High fidelity (~98%) and high success probability of the phase gate operation have been obtained when the coupling strength ratio (g2/g1) and resonant mode decay rate (κ/g1) are optimized. The subwavelength-scale plasmonic structures provide tremendous potential for solid-state quantum information processing.
我们演示了一种量子相 Flip 门，它由两个与等离子体双条谐振器共振耦合的 QD 组成，其耦合强度具有不对称性。由于等离子体双条谐振器中的光学模式的深亚波长模体积，可以实现较大的耦合强度。当优化耦合强度比（g2/g1）和共振模式衰减率（κ/g1）时，相位门操作的保真度（~98%）和成功率都很高。亚波长尺度的等离子体结构为固态量子信息处理提供了巨大的潜力。
