Efficient Atomic One-Qubit Phase Gate Realized by a Cavity QED and Identical Atoms System
He Yong, Nian-Quan Jiang · Communications in Theoretical Physics · 2010
We present a scheme to implement a one-qubit phase gate with a two-level atom crossing an optical cavity in which some identical atoms are trapped. One can conveniently acquire an arbitrary phase shift of the gate by properly choosing the number of atoms trapped in the cavity and the velocity of the atom crossing the cavity. The present scheme provides a very simple and efficient way for implementing one-qubit phase gate.