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Quantum Cryptography Using Single Particle Entanglement

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

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Jae-Weon Lee, Eok Kyun Lee, Yong Wook Chung, Hai-Woong Lee, Jaewan Kim. 2003-01-23. Quantum Cryptography Using Single Particle Entanglement. https://doi.org/10.1103/physreva.68.012324

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