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pro vyhledávání: '"Khanian, Zahra Baghali"'
Autor:
Khanian, Zahra Baghali
The transmission of classical information over a classical channel gave rise to the classical capacity theorem with the optimal rate in terms of the classical mutual information. Despite classical information being a subset of quantum information, th
Externí odkaz:
http://arxiv.org/abs/2309.14141
This paper is concerned with quantum data compression of asymptotically many independent and identically distributed copies of ensembles of mixed quantum states. The encoder has access to a side information system. The figure of merit is per-copy or
Externí odkaz:
http://arxiv.org/abs/2208.11698
Autor:
Khanian, Zahra Baghali
We consider many copies of a general mixed-state source $\rho^{AR}$ shared between an encoder and an inaccessible reference system $R$. We obtain a strong converse bound for the compression of this source. This immediately implies a strong converse f
Externí odkaz:
http://arxiv.org/abs/2206.09415
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 constitutes a quantum generalisation of the classical Wyner-Ziv problem. The qu
Externí odkaz:
http://arxiv.org/abs/2112.11952
Autor:
Khanian, Zahra Baghali
This thesis addresses problems in the field of quantum information theory. The first part of the thesis is opened with concrete definitions of general quantum source models and their compression, and each subsequent chapter addresses the compression
Externí odkaz:
http://arxiv.org/abs/2012.14143
Autor:
Khanian, Zahra Baghali, Bera, Manabendra Nath, Riera, Arnau, Lewenstein, Maciej, Winter, Andreas
Publikováno v:
Ann. Henri Poincar\'e 24(5):1725-1777, 2023
We consider a theory of quantum thermodynamics with multiple conserved quantities (or charges). To this end, we generalize the seminal results of Sparaciari et al. [PRA 96:052112, 2017] to the case of multiple, in general non-commuting charges, for w
Externí odkaz:
http://arxiv.org/abs/2011.08020
Publikováno v:
IEEE Trans. Inf. Theory, vol. 68, no. 5, pp. 3130-3138 (2022)
We consider the most general (finite-dimensional) quantum mechanical information source, which is given by a quantum system $A$ that is correlated with a reference system $R$. The task is to compress $A$ in such a way as to reproduce the joint source
Externí odkaz:
http://arxiv.org/abs/1912.08506
Publikováno v:
Proc. ISIT 2019, Paris, 7-12 July 2019, pp. 1147-1151, IEEE 2019
Ask how the quantum compression of ensembles of pure states is affected by the availability of entanglement, and in settings where the encoder has access to side information. We find the optimal asymptotic quantum rate and the optimal tradeoff (rate
Externí odkaz:
http://arxiv.org/abs/1901.06346
Publikováno v:
IEEE Trans. Inf. Theory 66(9):5620-5633, Sep 2020
We resume the investigation of the problem of independent local compression of correlated quantum sources, the classical case of which is covered by the celebrated Slepian-Wolf theorem. We focus specifically on classical-quantum (cq) sources, for whi
Externí odkaz:
http://arxiv.org/abs/1811.09177
Autor:
Bera, Manabendra Nath, Riera, Arnau, Lewenstein, Maciej, Khanian, Zahra Baghali, Winter, Andreas
Publikováno v:
Quantum 3, 121 (2019)
Thermodynamics and information have intricate interrelations. Often thermodynamics is considered to be the logical premise to justify that information is physical - through Landauer's principle -, thereby also linking information and thermodynamics.
Externí odkaz:
http://arxiv.org/abs/1707.01750