Title :
Passive switching scheme for two-way quantum key distribution setups
Author :
Temporao, Guilherme P.
Author_Institution :
Centre for Telecommun. Studies, Pontifical Catholic Univ. of Rio de Janeiro, Rio de Janeiro, Brazil
Abstract :
A simple design for Bob in two-way quantum key distribution schemes that employs only passive linear optical components to perform the necessary switching operations is presented. It is shown that, for some specific protocols and/or practical qubit implementations, the losses in Bob´s station can be made negligible, hence increasing the maximum distance for secret key generation.
Keywords :
public key cryptography; quantum cryptography; telecommunication switching; passive linear optical components; passive switching scheme; qubit implementations; secret key generation; two-way quantum key distribution;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.0414
