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10.1038/ncomms9626 http://scihub22266oqcxt.onion/10.1038/ncomms9626 C4667704!4667704!26478089     free     free     free Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\26478089.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117       Nat+Commun 2015 ; 6 (ä): ä Nephropedia Template TP {{tp|p=26478089|t=2015. Quantum-secure covert communication on bosonic channels |pdf=|usr=}}{{26478089}} gab.com Text Quantum-secure covert communication on bosonic channels JO: Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=26478089 #FOAvip Computational encryption, information-theoretic secrecy and quantum cryptography offer progressively stronger security against unauthorized decoding of messages contained in communication transmissions. However, these approaches do not ensure stealth?that the mere presence of message-bearing transmissions be undetectable. We characterize the ultimate limit of how much data can be reliably and covertly communicated over the lossy thermal-noise bosonic channel (which models various practical communication channels). We show that whenever there is some channel noise that cannot in principle be controlled by an otherwise arbitrarily powerful adversary?for example, thermal noise from blackbody radiation?the number of reliably transmissible covert bits is at most proportional to the square root of the number of orthogonal modes (the time-bandwidth product) available in the transmission interval. We demonstrate this in a proof-of-principle experiment. Our result paves the way to realizing communications that are kept covert from an all-powerful quantum adversary. Twit Text FOAVip Quantum-secure covert communication on bosonic channels ????Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=26478089 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=26478089 #FOAvip English Wikipedia <ref>{{Cite pmid|26478089}}</ref> Quantum-secure covert communication on bosonic channels #MMPMID26478089 Bash BA; Gheorghe AH; Patel M; Habif JL; Goeckel D; Towsley D; Guha S Nat Commun 2015[]; 6 (ä): ä PMID26478089show ga Computational encryption, information-theoretic secrecy and quantum cryptography offer progressively stronger security against unauthorized decoding of messages contained in communication transmissions. However, these approaches do not ensure stealth?that the mere presence of message-bearing transmissions be undetectable. We characterize the ultimate limit of how much data can be reliably and covertly communicated over the lossy thermal-noise bosonic channel (which models various practical communication channels). We show that whenever there is some channel noise that cannot in principle be controlled by an otherwise arbitrarily powerful adversary?for example, thermal noise from blackbody radiation?the number of reliably transmissible covert bits is at most proportional to the square root of the number of orthogonal modes (the time-bandwidth product) available in the transmission interval. We demonstrate this in a proof-of-principle experiment. Our result paves the way to realizing communications that are kept covert from an all-powerful quantum adversary. äQuantum-secure covert communication on bosonic channels (epmc).pdf DeepDyve Pubget Overpricing