Sign Flip in Giorgi–Pasquale–Paganelli Model
Zhanjun Zhang, Zhang-Yin Wang, Dong Wang, Shi Shou-Hua · Communications in Theoretical Physics · 2006
Taking advantage of our improved gates as well as the Giorgi–Pasquale–Paganelli (GPP) nondestructive gate [Phys. Rev. A 70 (2004) 022319], the sign of any term of the initial state in the GPP model can be flipped. The success possibility of the sign flip of odd number of terms is probabilistic (1/4), while the success possibility of the sign flip of even number of terms is deterministic (1).