Quantum Secure Direct Communication Using Entangled Photon Pairs and Local Measurement
Yi Xiao-Jie, Yi-you Nie, Nanrun Zhou, Yi-bing Huang, Hong Zhi-Hui, Song-Song Li · Communications in Theoretical Physics · 2008
We present a scheme for quantum secure direct communication, in which the message is encoded by local unitary operations, transmitted through entangled photons, and deduced from both the sender and receiver's local measurement results. In such a scheme, only one pair of entangled photons is consumed, and there is no need to transmit the sender's qubit carrying the secret message in a public channel, in order to transmit two-bit classical information.