6 papers
The average detection probability of the quantum dialogue protocol under the disturbance attack is 3/4
Nguyen Ba An
We prove explicitly that the detection probability of the disturbance attack in the recently proposed quantum dialogue protocol is 3/4 in average. The purpose is not only to reply…
Quantum dialogue
Nguyen Ba An
We propose an entanglement-based protocol for two people to simultaneously exchange their messages. We show that the protocol is asymptotically secure against the disturbance attac…
Generation of fan-states of radiation field in a cavity
Nguyen Ba An, Truong Minh Duc
A scheme of generating recently introduced fan-states | α, 2k>_F (αis complex, k=1,2,3,...) is proposed basing on a Λ-type atom-cavity field interaction. We show that with suitable…
Flower-like squeezing in the motion of a laser-driven trapped ion
Nguyen Ba An, Truong Minh Duc
We investigate the Nth order amplitude squeezing in the fan-state |ξ;2k,f>_F which is a linear superposition of the 2k-quantum nonlinear coherent states. Unlike in usual states whe…
Multi-directional higher-order amplitude squeezing
Nguyen Ba An
Fan-even K-quantum nonlinear coherent states are introduced and higher-order amplitude squeezing is investigated in such states. It is shown that for a given K the lowest order in…
K-quantum nonlinear coherent states: formulation, realization and nonclassical effects
Nguyen Ba An
We introduce a generalized class of states called K-quantum nonlinear coherent states. Each K-state has K j-components corresponding to one and the same eigenvalue. Each Kj-compone…