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Very interesting, I studied telecommunications and I thought the Shannon limit was the absolute limit. I wonder now if this Gordon Holevo limit is applicable fo
by aptitude_moo 2y ago
Very interesting, I studied telecommunications and I thought the Shannon limit was the absolute limit. I wonder now if this Gordon Holevo limit is applicable for "traditional" telecommunications (like 5G) as opposed to photon counting a deep space probe
EDIT: This paper seems to answer my question [1]
[1] https://opg.optica.org/directpdfaccess/8711ab35-bbc2-4d51-8e532b36ec497bcf_432047/jlt-38-10-2741.pdf https://opg.optica.org/directpdfaccess/8711ab35-bbc2-4d51-8e...
- stracer 2y agoCan you please post another link? This one does not work.
- aptitude_moo 2y agoWeird, it works for me. You can use any of the other published links in the sibling comments. The name of the paper is "Quantum Limits in Optical Communications" by Banaszek
- HappyPanacea 2y agoI think it is https://arxiv.org/abs/2002.05766 https://arxiv.org/abs/2002.05766.
- richarme 2y agoI think it's this one: https://opg.optica.org/jlt/viewmedia.cfm?uri=jlt-38-10-2741&seq=0 https://opg.optica.org/jlt/viewmedia.cfm?uri=jlt-38-10-2741&... Quantum Limits in Optical Communications Konrad Banaszek, Ludwig Kunz, Michał Jachura, and Marcin Jarzyna
- adrian_b 2y agoAs also explained in the conclusion of the paper linked by you, "photon-counting" detectors are possible only when the energy of one photon is high enough, which happens only for infrared light or for higher frequencies. "Photon-counting" methods cannot be implemented at frequencies so low as used in 5G networks or in any other traditional radio communications.
- IndrekR 2y ago/at room temperature/ https://en.wikipedia.org/wiki/Johnson%E2%80%93Nyquist_noise https://en.wikipedia.org/wiki/Johnson%E2%80%93Nyquist_noise