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Comment on: “Quantum exam” [Phys. Lett. A 350 (2006) 174] |
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| Authors: | Fei Gao Qiao-Yan Wen Fu-Chen Zhu |
| Affiliation: | aDepartment of Physics, College of Science, Yanbian University, Yanji, Jilin 133002, PR China |
| Abstract: | In the Letter [B.A. Nguyen, Phys. Lett. A 350 (2006) 174], a quantum exam protocol was presented. Here we show a cheating protocol, by which any student can get the other students' solution without being detected. Then we propose a possible modified protocol against this attacking strategy. |
| Keywords: | Entanglement CNOT operation |
| 本文献已被 ScienceDirect 等数据库收录！ | |