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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 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): 8626 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[Oct]; 6 (ä): 8626 PMID26478089 show 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