摘要
By factorizing a general one-bit transformation matrix for one-bit gates in quantum computer,a general unitary transformation is constructed,which can serve as(controlled)^(m) gate for the conditional quantum dynamics.When the quantized single-mode electromagnetic field containing n or no photons acts as the controlled bit,the quantum controlled-NOT gates and square root of the controlled-NOT gates in cavity-quantum electrodynamics are realized.
作者
WANG Xiao-guang
YU Rong-jin
FU Jian-zheng
王晓光;于荣金;付建政(Laboratory of Excited State Processes,Changchun Institute of Physics,Chinese Academy of Sciences,Changchun 130021;Department of Computer Engineering,Changchun University,Changchun 130022)
基金
Supported by the Youth Science Foundation of Jilin Education Committee。
