Abstract
Article deals with security criterion for sub-carrier wave quantum key distribution (SCW QKD) protocol in errorless channel. SCW QKD is promising type of QKD system in a field of telecommunications due to its compatibility and very efficient using of channel spectral bandwidth. Corresponding expression of security condition was derived for the first time in this work.
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An erratum to this article was added on 20 Nov 2018. The text of the erratum is appended to the PDF.