The Research On Quantum Teleportation And Quantum Secret Sharing

Quantum information is a new interdisciplinary subject that is a combination of quantum mechanics and classic information science. Quantum information, which is based on the basic theory of state superposition principle of quantum mechanics, mainly researches information management. It includes quantum cryptography, quantum communication and quantum computer and so on. The applications of quantum information are active areas and the developments on quantum information are very important. Recently, quantum information has gotten greatly developments. Further developments will not be easy; therefore it will be wonderful and attractive.In the paper, we mainly study about quantum teleportation and quantum secret sharing.In the second chapter, we introduce a basic quantum mechanics theory of quantum information, a basic theory of quantum communication and the principle of quantum computer. Also introduce domestic and foreign newest research progress.In the third chapter, we have analyzed the theory of quantum teleportation, and have made the quite comprehensive summary to the domestic and foreign fundamental research and the experimental study progress situation. Quantum teleportation is the simple one kind in quantum communication. It not only in the physics domain to the people knew with promulgates the nature the mystical rule to have the extremely vital significance, moreover may use the quantum state to take the information carrier, completes the large capacity information transmission through the quantum state transmission, realizes the quantum privacy communication which cannot break a code in principle. The reliability of his method is high, securely, can save the resources, reduces the correspondence the order of complexity, it will obtain the important application on quantum computation and quantum communication and so on.In the fourth chapter, we has studied the theory of quantum secret sharing, carry some supplement and improvement on some published literature and propose some new quantum secret sharing schemes. Put forward a scheme for quantum secret sharing of one qubit by using three-particle entangled W state. Extend the scheme for quantum secret sharing of one qubit by using three-particle entangled GHZ state to two qubits by using four-particle and five-particle entangled GHZ state. We introduce the elementary theory and application of entanglement swapping. Propose a scheme based on entanglement swapping for three-part quantum secret sharing by using three pairs...