The dynamical entropy of the quantum Arnold cat map

1995 ◽  
Vol 35 (4) ◽  
pp. 375-383 ◽  
Author(s):  
J. Andries ◽  
M. Fannes ◽  
P. Tuyls ◽  
R. Alicki
Entropy ◽  
2018 ◽  
Vol 21 (1) ◽  
pp. 7 ◽  
Author(s):  
Christoph Kawan

In the context of state estimation under communication constraints, several notions of dynamical entropy play a fundamental role, among them: topological entropy and restoration entropy. In this paper, we present a theorem that demonstrates that for most dynamical systems, restoration entropy strictly exceeds topological entropy. This implies that robust estimation policies in general require a higher rate of data transmission than non-robust ones. The proof of our theorem is quite short, but uses sophisticated tools from the theory of smooth dynamical systems.


2012 ◽  
Vol 58 (1) ◽  
pp. 445-452 ◽  
Author(s):  
Fei Chen ◽  
Kwok-Wo Wong ◽  
Xiaofeng Liao ◽  
Tao Xiang

1998 ◽  
Vol 43 (1) ◽  
pp. 31-40
Author(s):  
Johan Andries ◽  
Mieke De Cock
Keyword(s):  

Author(s):  
Robert Alicki ◽  
Mark Fannes
Keyword(s):  

Author(s):  
Mona F. M. Mursi ◽  
Hossam Eldin H. Ahmed ◽  
Fathi E. Abd El-Samie ◽  
Ayman H. Abd El-Aziem

In this paper, the authors propose an image encryption scheme based on the development of a Hénon chaotic map using fractional Fourier transform (FRFT) which is introduced to satisfy the necessity of high secure image. This proposed algorithm combines the main advantages of confusion and diffusion with (FRFT), it use Arnold Cat map for confusion and Hénon chaotic map or one of the proposed Hénon chaotic maps for diffusion. The proposed algorithm is compared with some image encryption algorithms based on Arnold Cat map, Baker chaotic map, Hénon chaotic map and RC6. The authors perform a comparison between them in several experimental tests as statistical analyses, processing time and security analysis. The authors find from these comparison tests that the proposed algorithm demonstrates good result even better than RC6 and other chaotic maps in some cases.


2019 ◽  
Vol 78 (14) ◽  
pp. 19163-19179 ◽  
Author(s):  
Seyyed Hossein Soleymani ◽  
Amir Hossein Taherinia ◽  
Amir Hossein Mohajerzadeh

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