Two-to-one quantum teleportation protocol and its application

In this paper, we propose a two-to-one quantum teleportation protocol with three-particle entangled states. Two senders teleport the product of their quantum states to one receiver. The quantum product is of two types. The receiver will recover one type with probability 1/2. We further apply our protocol to send the message secretly. The receiver can recover the original message with probability 1 - (1/2)(k) after performing our protocol k times. (C) 2006 Elsevier Ltd. All rights reserved.