Secure quantum key distribution with a single not-so-weak coherent pulse

Chil Min Kim, Yong Wan Kim, Young Jai Park

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We propose a secure quantum key distribution (QKD) protocol using a single not-so-weak coherent qubit. With two preprocesses for random rotation and compensation, a key bit is encoded to a randomly polarized not-so-weak coherent qubit. We analyze the security of the QKD protocol, which counters the photon number splitting and the impersonation attacks. The estimated mean number of photon, which is less than 6.0, guarantees security. Additionally, we discuss the possibility of quantum secure direct communication.

Original languageEnglish
Pages (from-to)888-890
Number of pages3
JournalOptics Letters
Volume32
Issue number8
DOIs
StatePublished - 15 Apr 2007

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