Quasi-superactivation of classical capacity of zero-capacity quantum channels
نویسندگان
چکیده
منابع مشابه
Quasi-Superactivation of Classical Capacity of Zero-Capacity Quantum Channels
One of the most surprising recent results in quantum Shannon theory is the superactivation of the quantum capacity of a quantum channel. This phenomenon has its roots in the extreme violation of additivity of the channel capacity and enables to reliably transmit quantum information over zerocapacity quantum channels. In this work we demonstrate a similar effect for the classical capacity of a q...
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The superactivation of zero-capacity quantum channels makes it possible to use two zerocapacity quantum channels with a positive joint capacity at the output. Currently, we have no theoretical background for describing all possible combinations of superactive zerocapacity channels; hence, there may be many other possible combinations. In this PhD Thesis I provide an algorithmic solution to the ...
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The superactivation of zero-capacity quantum channels makes it possible to use two zero-capacity quantum channels with a positive joint capacity for their output. Currently, we have no theoretical background to describe all possible combinations of superactive zero-capacity channels; hence, there may be many other possible combinations. In practice, to discover such superactive zero-capacity ch...
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This paper introduces a fundamentally new method of finding the conditions for the superactivation of the zero-error capacity of quantum channels. The zero-error capacity of the quantum channel describes the amount of information which can be transmitted perfectly through a noisy quantum channel. The superactivation of the zero-error capacity of quantum channels makes it possible to use two qua...
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We analyze the quantum binary adder channel, i.e. the quantum generalization of the classical, and well–studied, binary adder channel: in this model qubits rather than classical bits are transmitted. This of course is as special case of the general theory of quantum multiple access channels, and we may apply the established formulas for the capacity region to it. However, the binary adder chann...
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ژورنال
عنوان ژورنال: Journal of Modern Optics
سال: 2012
ISSN: 0950-0340,1362-3044
DOI: 10.1080/09500340.2012.711491