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26 January 2009 Physical and architectural considerations in quantum repeaters
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Quantum repeaters enable us to distribute entanglement between remote parties by relying on a network of quantum memory units that exhibit efficient coupling to light, scalability, and long coherence times. Entanglement is initially distributed between nearest neighbors and then extended to the far-end nodes using entanglement swapping techniques. For real-time applications, such as quantum key distribution, the above tasks must be repeated successively, according to a proper protocol, to generate entangled states at a certain rate. This paper studies a number of such protocols and the interplay between the rate of entanglement generation, the number of employed memories, and the coherence time of memory units.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Razavi, K. Thompson, H. Farmanbar, Ma. Piani, and N. Lütkenhaus "Physical and architectural considerations in quantum repeaters", Proc. SPIE 7236, Quantum Communications Realized II, 723603 (26 January 2009);


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