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- W1540050794 abstract "This chapter discusses the concept of entangled photons and their application in quantum communication. Quantum entanglement offers unique insights into the fundamental principles of our physical world and provides the basis of novel communication protocols, which allow efficient communication and computation. Prominent examples are quantum cryptography, the simultaneous distribution of a cryptographic key that is ultimately secured by the laws of quantum physics, quantum dense coding, a protocol to double the classically allowed capacity of a communication channel by encoding 2 bits of information per bit sent, or quantum teleportation, the remote transfer of an arbitrary quantum state between distant locations. Further examples include entanglement-assisted classical communication to enhance the communication capacity in a noisy environment or methods to exploit the computational advantages provided by quantum entanglement for communication complexity problems. These quantum communication protocols utilize entanglement as a resource and form the basis for a new emerging quantum information technology. To achieve quantum communication within a network it is a central task to be able to distribute and manipulate quantum entanglement, in principle up to a global scale. At present, the only suitable system for transmitting information in long-distance quantum communication are photons." @default.
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- W1540050794 date "2004-01-01" @default.
- W1540050794 modified "2023-10-16" @default.
- W1540050794 title "Course 9 Entangled photons and quantum communication" @default.
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- W1540050794 doi "https://doi.org/10.1016/s0924-8099(03)80033-1" @default.
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