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- W2023373526 abstract "We consider the problem of quantum communication mediated by an optical refocusing system, which is schematized as a thin lens with a finite pupil. This model captures the basic features of all those situations in which a signal is either refocused by a repeater for long distance communication, or it is focused on a detector prior to the information decoding process. Introducing a general method for linear optical systems, we compute the communication capacity of the refocusing apparatus. Although the finite extension of the pupil may cause loss of information, we show that the presence of the refocusing system can substantially enhance the rate of reliable communication with respect to the free-space propagation." @default.
- W2023373526 created "2016-06-24" @default.
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- W2023373526 date "2011-07-25" @default.
- W2023373526 modified "2023-10-18" @default.
- W2023373526 title "Enhanced quantum communication via optical refocusing" @default.
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- W2023373526 doi "https://doi.org/10.1103/physreva.84.010303" @default.
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