Stochastic decoupling approach to the spin-boson dynamics: Perturbative and nonperturbative treatments

2018 ◽  
Vol 98 (3) ◽  
Author(s):  
Wei Wu
Keyword(s):  
2009 ◽  
Vol 12 (3) ◽  
pp. 1-30 ◽  
Author(s):  
Ralf Korn ◽  
Stefanie Müller
Keyword(s):  

2008 ◽  
Vol 15 (01) ◽  
pp. 7-19 ◽  
Author(s):  
Patrick Hayden ◽  
Michał Horodecki ◽  
Andreas Winter ◽  
Jon Yard

We give a short proof that the coherent information is an achievable rate for the transmission of quantum information through a noisy quantum channel. Our method is to produce random codes by performing a unitarily covariant projective measurement on a typical subspace of a tensor power state. We show that, provided the rank of each measurement operator is sufficiently small, the transmitted data will, with high probability, be decoupled from the channel environment. We also show that our construction leads to random codes whose average input is close to a product state and outline a modification yielding unitarily invariant ensembles of maximally entangled codes.


2019 ◽  
Vol 52 (20) ◽  
pp. 205-210
Author(s):  
Eleftherios E. Vlahakis ◽  
Leonidas D. Dritsas ◽  
George D. Halikias

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