Quantum communication is the art of transferring a quantum state from one location to a distant one. Commercial applications cover Quantum Random Number Generators (QRNG) and Quantum Key Distributions (QKD). Academic research focuses mostly on two topics. First, quantum repeaters that should allow one to break the 500 Km distance limit of direct QKD; the grand challenge is second-long quantum storage with 90% efficiency. A second topic is Device Independent Quantum Information Processing, another intellectually fascinating prospect.
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