Transmission of information through mesoscopic scattering systems |
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Authors: | E Akkermans |
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Institution: | (1) Department of Applied Physics and Physics, Yale University, 32000 New Haven, USA;(2) Department of Physics, Technion Israel Institute of Technology, Haifa, Israel |
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Abstract: | The storage and transmission of information is well defined using the notions of entropy, mutual information and channel capacity
as formalized by Shannon. These quantities are calculated for a quantum mesoscopic system in terms of scattering parameters.
For a one-dimensional system, the mutual information is related to the thermal conductance. This relation allows to show that
for an incident signal of power P, the channel capacity C has a universal upper bound given by C
independent of quantum statistics. A general framework is proposed which makes use of a natural underlying symplectic structure,
to relate the entropy of a quantum mesoscopic system to the scattering matrix. |
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Keywords: | PACS" target="_blank">PACS 73 23 -b Electronic transport in mesoscopic systems 05 60 Gg Quantum transport 65 40 gd Entropy 03 67 Hk Quantum communication |
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