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S.
Lloyd
Proceedings
of the Sixth International Conference on Quantum Communication,
Measurement and Computing,
J.H. Shapiro and O. Hirota, eds. (Rinton Press, Princeton, 2003).
Abstract
This paper investigates
the capacity of quantum channels, and shows that enhancements in channel
capacity can be obtained by coupling together the information degrees
of freedom in quantum channels. By coupling together modes in a multimode
optical fiber, one can in principle obtain a significant enhancement
of the capacity of the fiber for fixed power over the same fiber with
uncoupled modes.
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