scholarly journals High-fidelity state transfer between leaky quantum memories

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Daniel Soh ◽  
Eric Chatterjee ◽  
Matt Eichenfield
Keyword(s):  
2014 ◽  
Vol 14 (5&6) ◽  
pp. 417-438
Author(s):  
Katharine E. Barr ◽  
Tim J. Proctor ◽  
Daniel Allen ◽  
Viv M. Kendon

We systematically investigated perfect state transfer between antipodal nodes of discrete time quantum walks on variants of the cycles $C_4$, $C_6$ and $C_8$ for three choices of coin operator. Perfect state transfer was found, in general, to be very rare, only being preserved for a very small number of ways of modifying the cycles. We observed that some of our useful modifications of $C_4$ could be generalised to an arbitrary number of nodes, and present three families of graphs which admit quantum walks with interesting dynamics either in the continuous time walk, or in the discrete time walk for appropriate selections of coin and initial conditions. These dynamics are either periodicity, perfect state transfer, or very high fidelity state transfer. These families are modifications of families known not to exhibit periodicity or perfect state transfer in general. The robustness of the dynamics is tested by varying the initial state, interpolating between structures and by adding decoherence.


CLEO: 2014 ◽  
2014 ◽  
Author(s):  
Christoph Kurz ◽  
Philipp Müller ◽  
Michael Schug ◽  
Pascal Eich ◽  
Jan Huwer

2010 ◽  
Vol 81 (4) ◽  
Author(s):  
C. Allen Bishop ◽  
Yong-Cheng Ou ◽  
Zhao-Ming Wang ◽  
Mark S. Byrd
Keyword(s):  

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Jian Zhou ◽  
Yong Hu ◽  
Zhang-qi Yin ◽  
Z. D. Wang ◽  
Shi-Liang Zhu ◽  
...  

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