Proving the distillability problem of two-copy $$4\times 4$$ Werner states for monomial matrices

2021 ◽  
Vol 20 (4) ◽  
Author(s):  
Lin Chen ◽  
Huixia He ◽  
Xian Shi ◽  
Li-Jun Zhao
Keyword(s):  
2006 ◽  
Vol 58 (3) ◽  
pp. 325-334 ◽  
Author(s):  
Kai Chen ◽  
Sergio Albeverio ◽  
Shao-Ming Fei

Author(s):  
Thomas P. W. Cope ◽  
Stefano Pirandola

AbstractThe class of quantum states known as Werner states have several interesting properties, which often serve to illuminate unusual properties of quantum information. Closely related to these states are the Holevo- Werner channels whose Choi matrices are Werner states. Exploiting the fact that these channels are teleportation covariant, and therefore simulable by teleportation, we compute the ultimate precision in the adaptive estimation of their channel-defining parameter. Similarly, we bound the minimum error probability affecting the adaptive discrimination of any two of these channels. In this case, we prove an analytical formula for the quantum Chernoff bound which also has a direct counterpart for the class of depolarizing channels. Our work exploits previous methods established in [Pirandola and Lupo, PRL


2021 ◽  
Vol 424 ◽  
pp. 168371
Author(s):  
Nan Li ◽  
Shunlong Luo ◽  
Yuan Sun

Entropy ◽  
2016 ◽  
Vol 18 (6) ◽  
pp. 216 ◽  
Author(s):  
Dragomir Đoković
Keyword(s):  

2015 ◽  
Vol 605 ◽  
pp. 012036
Author(s):  
Álvaro J Almeida ◽  
Luís P Martins ◽  
Paulo S André ◽  
Armando N Pinto
Keyword(s):  

2014 ◽  
Vol 14 (2) ◽  
pp. 559-572 ◽  
Author(s):  
Guofeng Li ◽  
Yimin Liu ◽  
Haojie Tang ◽  
Xiaofeng Yin ◽  
Zhanjun Zhang

2006 ◽  
Vol 73 (3) ◽  
Author(s):  
Marco Caminati ◽  
Francesco De Martini ◽  
Riccardo Perris ◽  
Fabio Sciarrino ◽  
Veronica Secondi

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