| Summary: | 碩士 === 國立成功大學 === 資訊工程學系碩博士班 === 101 === In recent years, studies of quantum computation and quantum information have attracted a considerable amount of attention regarding the development of quantum computers. Quantum computers are a product of physics and computer science that can use quantum mechanics to execute operations. Entanglement is a particular feature of quantum mechanics that is considered a specific correlation between two or more individual particles. However, it is also a valuable resource that can be applied to various tasks of quantum information processing, such as quantum teleportation, quantum dense coding, quantum secure communication, quantum secret sharing, and quantum private comparison (QPC).
Quantum teleportation is not only one of the most fundamental manners of quantum information processing, but is also used to transmit a quantum state among distant parties. These processes are completed by using shared entanglement, local operations and classical communication rather than transmission to the quantum state directly. Since Bennett et al. first demonstrated the teleportation of an unknown quantum state through the entanglement of an Einstein-Podolsky-Rosen pair, teleportation has been achieved experimentally in different environments.
In addition to teleporting a quantum state, quantum entanglement can transfer a quantum operation to a distant quantum system. In other words, one party can remotely perform an operation on a particle possessed by another party, which is called quantum remote control (QRC). Huelga et al. first implemented the task through bidirectional quantum state teleportation. Several related studies have followed that have proposed reducing the required resources or different methods for implementing QRC.
In this thesis, we consider the scenario of a multi-controller and propose the multiparty QRC protocol, which can be applied in QPC. In addition, we propose a protocol combining the concept of quantum teleportation and remote control that can be applied to design a controlled quantum teleportation protocol.
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