Implementing a high-efficiency quantum-controlled phase gate between long-distance atoms
Xiu‐Min Lin, Zheng-Wei Zhou, Ming-Yong Ye, Yun‐Feng Xiao, Guang‐Can Guo · Journal of the Optical Society of America B · 2005
We propose a scheme for the implementation of the quantum-controlled phase gate between distant atoms. Two special lasers adiabatically drive an atom trapped in a cavity that unidirectionally couples to the other cavity trapping an atom; then the phase gate between the two atoms is realized by introduction of measurement and local operations. The numerical simulations show that the quality factor of the gate operation is close to unity even if the atomic spontaneous emission is taken into account; the success probability approaches unity in principle.