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Position-Based Quantum Cryptography: Impossibility and Constructions
Quantum Cryptography Impossibility Constructions
2010/10/19
In this work, we study position-based cryptography in the quantum setting. The aim is to use the geographical position of a party as its only credential. On the negative side, we show that if adversar...
On the impossibility of superluminal travel: the warp drive lesson
superluminal travel warp drive lesson
2010/3/18
The question of whether it is possible or not to surpass the speed of light is already centennial. The special theory of relativity took the existence of a speed limit as a principle, the light postul...
No-relationship Between Impossibility of Faster-Than-Light Quantum Communication and Distinction of Ensembles with the Same Density Matrix
faster-than-light communication distinction of ensembles density matrix
2007/8/15
2005Vol.44No.4pp.622-624DOI:
No-relationship Between Impossibility of Faster-Than-Light Quantum Communication and Distinction of Ensembles with the Same Density Matrix
WANG Chuan,...