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Browsing by Author "Bradler, Kamil"
Now showing items 1-5 of 5
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(Springer, 2014-05-21)We study the properties of the quantum information transmission channel that emerges from the quantum dynamics of particles interacting with a black hole horizon. We calculate the quantum channel capacity in two limiting ...
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(IOP Publishing, 2015-03-02)We prove that whenever the coherent information of a one-mode Gaussian channel is non-zero its supremum is achieved for the infinite input power. This is a well established fact for the zero added classical noise, whereas ...
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Hiking a generalized Dyck path: a tractable way of calculating multimode boson evolution operators (Elsevier, 2015-11)A time evolution operator in the interaction picture is given by exponentiating an interaction Hamiltonian H. Important examples of Hamiltonians, often encountered in quantum optics, condensed matter and high energy physics, ...
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The pitfalls of deciding whether a quantum channel is (conjugate) degradable and how to avoid them (World Scientific Publishing, 2015)To decide whether a quantum channel is degradable is relatively easy: one has to find at least one example of a degrading quantum channel. But in general, no conclusive criterion exists to show the opposite. Using elementary ...
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(Societa Italiana di Fisica, 2015-08)Superqubits provide a supersymmetric generalisation of the conventional qubit in quantum information theory. After a review of their current status, we address the problem of generating entangled states. We introduce the ...
Now showing items 1-5 of 5