Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Mário Ziman"'
Autor:
Teiko Heinosaari, Mário Ziman
For almost every student of physics, the first course on quantum theory raises a lot of puzzling questions and creates a very uncertain picture of the quantum world. This book presents a clear and detailed exposition of the fundamental concepts of qu
Autor:
Jaroslav Pavličko, Mário Ziman
We investigate robustness of probabilistic storage and retrieval device optimized for phase gates to noise. We use noisy input composed of convex combination of unitary channel with either depolarizing or dephasing channel. We find out that the resis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c934265d06b680f5f097212fa119ede3
http://arxiv.org/abs/2211.07079
http://arxiv.org/abs/2211.07079
Autor:
Mário Ziman, Seyed Arash Ghoreishi
Publikováno v:
Physical Review A. 104
We study several variations of the question of minimum-error discrimination of thermal states. Besides of providing the optimal values for the probability of error, we also characterize the optimal measurements. For the case of a fixed Hamiltonian, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec263f0ba70667042dc34c326eb40aa8
https://doi.org/10.1103/physreva.104.062402
https://doi.org/10.1103/physreva.104.062402
Autor:
Michal Sedlák, Mário Ziman
Probabilistic storage and retrieval (PSR) of unitary quantum dynamics is possible with exponentially small failure probability with respect to the number of systems used as a quantum memory [PRL 122, 170502 (2019)]. Here we study improvements due to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f56f2d1996774e4b87d8ea111a8c095
http://arxiv.org/abs/2008.09555
http://arxiv.org/abs/2008.09555
Publikováno v:
Physical Review Letters. 122
We address the question of a quantum memory storage of quantum dynamics. In particular, we design an optimal protocol for $N\to 1$ probabilistic storage-and-retrieval of unitary channels on $d$-dimensional quantum systems. If we may access the unknow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0158fd00d23a73a08bcb4a4f9fd1ce9d
https://doi.org/10.1103/physrevlett.122.170502
https://doi.org/10.1103/physrevlett.122.170502
Publikováno v:
Quantum, Vol 3, p 144 (2019)
QUANTUM
QUANTUM
The concept of divisibility of dynamical maps is used to introduce an analogous concept for quantum channels by analyzing the \textit{simulability} of channels by means of dynamical maps. In particular, this is addressed for Lindblad divisible, compl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42563c215f701d465f3df4b7d4b9c98e
https://quantum-journal.org/papers/q-2019-05-20-144/pdf/
https://quantum-journal.org/papers/q-2019-05-20-144/pdf/
Autor:
Mário Ziman, Martin Plávala
Publikováno v:
Physics Letters A. 384:126323
It is shown that Popescu-Rohrlich nonlocal boxes (beating the Tsirelson bound for Bell inequality) do exist in the existing structures of both quantum and classical theory. In particular, we design an explicit example of measure-and-prepare nonlocal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cb0c9d613502d5dc0618d2140d137a0
https://doi.org/10.1016/j.physleta.2020.126323
https://doi.org/10.1016/j.physleta.2020.126323
A quantum observable and a channel are considered compatible if they form parts of the same measurement device, otherwise they are incompatible. Constrains on compatibility between observables and channels can be quantified via relations highlighting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebd12e7e328f9c33af83aafa51f89f3c
http://arxiv.org/abs/1710.00878
http://arxiv.org/abs/1710.00878
Publikováno v:
Physical Review A
Divisibility of dynamical maps is visualized by trajectories in the parameter space and analyzed within the framework of collision models. We introduce ultimate completely positive (CP) divisible processes, which lose CP divisibility under infinitesi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a92ff0b7f587831d1bfacd47806e932
https://aaltodoc.aalto.fi/handle/123456789/32882
https://aaltodoc.aalto.fi/handle/123456789/32882