We put forward an efficient quantum controlled teleportation scheme, in which arbitrary two-qubit state is transmitted from the sender to the remote receiver via two entangled states under the control of the supervisor. In this paper, we use the combination of one two-qubit entangled state and one three-qubit entangled state as quantum channel for achieving the transmission of unknown quantum states. We present the concrete implementation processes of this scheme. Furthermore, we calculate the successful probability and the amount of classical information of our protocol.
Based on the results of molecular dynamics simulations the characteristics of discrete breathers (DB) in two-dimensional (2D) and three-dimensional (3D) crystals with Morse long-range interatomic interactions are compared. It is demonstrated that DB in 3D crystal have higher frequencies and higher degree of localization than in 2D crystal.
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