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- W2015914585 abstract "We investigate how special relativity influences the transmission of classical information through quantum channels by evaluating the Holevo bound when the sender and the receiver are in (relativistic) relative motion. By using the spin degrees of freedom of spin-$1/2$ fermions to encode the classical information, we show that, for some configurations, the accessible information in the receiver can be increased when the spin detector moves fast enough. This is possible by allowing the momentum wave packet of one of the particles to be sufficiently wide while the momentum wave packets of other particles are kept relatively narrow. In this way, one can take advantage of the fact that boosts entangle the spin and momentum degrees of freedom of spin-$1/2$ fermions to increase the accessible information in the former. We close the paper with a discussion of how this relativistic quantum channel cannot in general be described by completely positive quantum maps." @default.
- W2015914585 created "2016-06-24" @default.
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- W2015914585 date "2013-04-29" @default.
- W2015914585 modified "2023-10-03" @default.
- W2015914585 title "Sending classical information through relativistic quantum channels" @default.
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- W2015914585 doi "https://doi.org/10.1103/physreva.87.042339" @default.
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