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Counterfactual Universal Logic Gates
Nang Paing Saw,Fakhar Zaman,Junaid ur Rehman,Hyundong Shin 한국통신학회 2020 한국통신학회 학술대회논문집 Vol.2020 No.8
In this paper, we develop universal logic gates such as NAND and NOR gate using optical devices and chained quntuam Zeno (CQZ) effect which lead us to the counterfactual implementation of the universal logic gates without prior entanglement. We consider that the two binary inputs Alice (X) and Bob (Y); and the output Charlie (Z) of the countfactual logic gate are the distinct parties and demonstrate the counterfactual implementation of 2-inputs/1-output universal logic gates. Then, we generalize these results for n-inputs/1-output counterfactual universal logic gates.
Counterfactual Controlled Quantum Teleportaion
Nang Paing Saw,Fakhar Zaman,Hyundong Shin(신현동) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.2
We investigate counterfactual controlled quantum teleportation in which the GHZ state is countefactually distributed among the three parties. Based on this nonlocal shared GHZ state, a sequence of unknown quantum state is teleported to the receiver in a contollable manner. Due to the conterfactual property and measurement consistency checking, the presence of eavesdropping will inevitably introduce errors and hence can be detected at once. The proposed scheme is shown to be more secure compared to previous schemes.
Counterfactual Quantum Private Comparison
Saw Nang Paing,Fakhar Zaman,Hyundong Shin 한국통신학회 2022 한국통신학회 학술대회논문집 Vol.2022 No.2
This paper proposes a new counterfactual quantum private comparison protocol to compare the quantum states of the two distinct parties without revealing the actual quantum states to the third party and without transmitting any physical particles through the channel. We demonstrate the counterfactual quantum private comparison protocol by using the H-CQZ gates, rotation operators and Swap test.