6 papers
Additivity Results for the Rényi-2 Entanglement of Purification
Shokoufe Faraji, Zahra Baghali Khanian
We reformulate the Rényi entanglement of purification as a constrained minimum output Rényi entropy problem. Equivalently, for , this formulation can be expressed in terms o…
Entanglement sharing schemes
Zahra Khanian, Dongjin Lee, Debbie Leung +7
We ask how quantum correlations can be distributed among many subsystems. To address this, we define entanglement sharing schemes (ESS) where certain pairs of subsystems allow enta…
On Strong Converse Bounds for the Private and Quantum Capacities of Anti-degradable Channels
Zahra Baghali Khanian, Christoph Hirche
We establish a strong converse bound for the private classical capacity of anti-degradable quantum channels. Specifically, we prove that this capacity is zero whenever the error $Î…
Strong Converse Bounds for Compression of Mixed States
Zahra Baghali Khanian
In this paper, we study strong converse properties for both visible and blind compression of mixed states. The optimal rate of a visible compression scheme is obtained in terms of…
A Rate-Distortion Perspective on Quantum State Redistribution
Zahra Baghali Khanian, Andreas Winter
We consider a rate-distortion version of the quantum state redistribution task, where the error of the decoded state is judged via an additive distortion measure; it thus constitut…
Quantum Reverse Shannon Theorem Revisited
Zahra Baghali Khanian, Debbie Leung
Reverse Shannon theorems concern the use of noiseless channels to simulate noisy ones. This is dual to the usual noisy channel coding problem, where a noisy (classical or quantum)…