The Research On Quantum Teleportation And Quantum Information Splitting In Quantum Communication

Quantum information science is a new and developing interdiscipline subject, which combined by the classic information theory and quantum mechanics, based on quantum mechanics superposition principle, is a new frontier science of studying the information processing. Quantum information science mainly includes two parts: quantum communication and quantum computation, quantum communication is to transfer and process information based on quantum, mainly including quantum dense coding, quantum teleportation, quantum cloning, etc. Compared with classic communication, quantum communication is more efficient and absolute safety, and can realize some function which the classic communication unable to realize. Because quantum information science has strong development future, and at present, theory and experiment have made important progress, all these arouse the enthusiasm of the people more research.Since Bennett et al. first proposed the concept of quantum teleportation in1993, all kinds of teleportation scheme have been put forward, in this paper, we present two schemes for teleportating a product state. Eversince Hillery et al. advocated the concept of quantum information splitting in1993for the first time, it has attracted much attention, and various work have been reported, in this paper, we propose a scheme for splitting up of a product state of arbitrary single-qubit using an entangled GHZ state.Scheme1:we focus on a product state of an arbitrary single-qubit state for teleportation, in the work, we used a four-particle cluster state as quantum channel. In the first scheme, quantum channel is a maximally cluster state, the sender will make two Bell state measurements, the receiver can gain the initial state through appropriate the unitary transformation, the successful possibility of our first scheme is reach1.0, while in the second scheme, quantum channel is a non-maximally cluster state, with the aid of auxiliary particle, the successful probability is less than1.Scheme2:we propose a scheme for quantum information splitting of a product state of an arbitrary single-qubit state with three-qubit GHZ states. First, the sender A will do GHZ state measurement on the particles of product state, and the controller C introduces a auxiliary particle, and makes some unitary transformations on his particle, then do measurement in the calculation of measurement base, with the aid of the controller C, the receiver B can gain the sender’s secret through single qubit rotation.