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篇目详细内容

【篇名】 How far can one send a photon?
【刊名】 Frontiers of Physics
【刊名缩写】 Front. Phys.
【ISSN】 2095-0462
【EISSN】 2095-0470
【DOI】 10.1007/s11467-015-0485-x
【出版社】
【出版年】 2015
【卷期】 10 卷6期
【页码】 7-100307 页,共 100301 页
【作者】 Nicolas Gisin;
【关键词】 quantum communication

【摘要】

The answer to the question How far can one send a photon? depends heavily on what one means by a photon and on what one intends to do with that photon. For direct quantum communication, the limit is approximately 500 km. For terrestrial quantum communication, near-future technologies based on quantum teleportation and quantum memories will soon enable quantum repeaters that will turn the development of a world-wide-quantum-web (WWQW) into a highly non-trivial engineering problem. For Device-Independent Quantum Information Processing, near-future qubit amplifiers (i.e., probabilistic heralded amplification of the probability amplitude of the presence of photonic qubits) will soon allow demonstrations over a few tens of kilometers.

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