Paichai University Industry-Academic Cooperation Foundation

Won-Ho Kye

Chil-Min Kim

Young-Jai Park

A cryptography method using a quantum phenomenon, which performs a multi-staged polarization process between a transmitter and a receiver to prevent a third party from knowing the polarization value of a photon. A transmitter rotates a photon flux by arbitrary angle &#x3b8; and transmits it to a receiver. The receiver rotates the received photon flux by arbitrary angle &#x3c6; and transmits it to the transmitter. The transmitter rotates the received photon flux by the reverse angle &#x2212;&#x3b8; of an angle, by which the transmitterrotated it, then rotates it by polarization corresponding to an information bit, and transmits it to the receiver which rotates the received photon flux by the reverse angle &#x2212;&#x3c6; of an angle, and measures the polarization of the photon flux corresponding to the information bit, and recovers the information bit transmitted by the transmitter. Cryptography information may be transmitted using a plurality of photon fluxes.

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Daejeon, South Korea

Won-Ho Kye