Shared quantum entanglements are rare resources and widely used in various quantum information processing. They are thought sometimes to be more important than local operation and classical communication. In this paper a shared mixing entangled state derived from a pair of Bell states due to participants’ qubit confusion is taken as quantum channel and a quantum teleportation scheme is amply put forward. It is shown that, the state can be used to teleport a single-qubit state with success probability 3/4 rather than discarded. More importantly, from it a Bell state can be derived with 1/2 probability so that whether the teleportation is further proceeded or not can be decided in advance. If not, the unknown state to be teleported will not be destroyed due to the measure. The additional costs in contrast to standard single-qubit state teleportation are two control-not gate operations, two single-qubit measures and a classical-bit message consumption. The underlying reason of abstracting a shared entanglement for quantum teleportation is revealed.

中文翻译：

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由于量子比特混淆，来自两个贝尔态的混合态隐形传态

共享量子纠缠是一种稀有资源，广泛应用于各种量子信息处理。它们有时被认为比本地操作和经典通信更重要。本文将由于参与者的量子比特混淆而从一对贝尔态导出的共享混合纠缠态作为量子通道，并充分提出了一种量子隐形传态方案。结果表明，该状态可用于传送单量子位状态，成功概率为 3/4，而不是丢弃。更重要的是，从中可以以1/2的概率推导出Bell态，从而可以提前决定是否进一步进行隐形传送。否则，待传送的未知状态不会因措施而被破坏。与标准单量子位状态隐形传态相比，额外的成本是两个控制而非门操作、两个单量子位测量和一个经典位消息消耗。揭示了为量子隐形传态抽象共享纠缠的根本原因。