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arXiv:quant-ph/0301131 · Physical Review A

Quantum cryptography using single-particle entanglement

Jae Weon Lee, Eok Kyun Lee, Yong Wook Chung, Hai-Woong Lee, Jaewan Kim

Published Jul 23, 2003• 45 citations
arXivHTMLPDF

Abstract

A quantum cryptography scheme based on entanglement between a single-particle state and a vacuum state is proposed. The scheme utilizes linear optics devices to detect the superposition of the vacuum and single-particle states. Existence of an eavesdropper can be detected by using a variant of Bell's inequality.
DOI
10.1103/physreva.68.012324

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