scholarly journals Asymptotically consistent measures of general quantum resources: Discord, non-Markovianity, and non-Gaussianity

2021 ◽  
Vol 104 (2) ◽  
Author(s):  
Kohdai Kuroiwa ◽  
Hayata Yamasaki
Keyword(s):  
General Quantum

QUANTUM PROXY GROUP SIGNATURE SCHEME WITH χ-TYPE ENTANGLED STATES

2012 ◽  
Vol 10 (04) ◽  
pp. 1250041 ◽  
Author(s):  
XUN-RU YIN ◽  
WEN-PING MA ◽  
WEI-YAN LIU
Keyword(s):  
Initial Phase ◽  
Proxy Signature ◽  
Quantum Signature ◽  
Unconditional Security ◽  
Group Signature ◽  
Entangled States ◽  
Utilization Rate ◽  
Signature Scheme ◽  
State Sequence ◽  
General Quantum

A quantum proxy group signature scheme is proposed with χ-type entangled states. Our scheme combines the properties of group signature and proxy signature. Moreover, the particles in the χ-type state sequence are used to distribute proxy warrants and quantum keys in the initial phase, and then used for quantum signature. Therefore it increases the utilization rate of quantum resources compared with the general quantum signature scheme. Finally, the unconditional security of our scheme is also analyzed.

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