Results 21 to 30 of about 13,378 (267)

Majorization preservation of Gaussian bosonic channels

open access: yesNew Journal of Physics, 2016
It is shown that phase-insensitive Gaussian bosonic channels are majorization-preserving over the set of passive states of the harmonic oscillator. This means that comparable passive states under majorization are transformed into equally comparable ...
Michael G Jabbour   +2 more
doaj   +1 more source

Fundamental limitations for quantum and nano thermodynamics [PDF]

open access: yes, 2013
The relationship between thermodynamics and statistical physics is valid in the thermodynamic limit - when the number of particles becomes very large. Here, we study thermodynamics in the opposite regime - at both the nano scale, and when quantum effects
AE Allahverdyan   +32 more
core   +2 more sources

The Majorization Arrow in Quantum Algorithm Design [PDF]

open access: yes, 2001
We apply majorization theory to study the quantum algorithms known so far and find that there is a majorization principle underlying the way they operate. Grover's algorithm is a neat instance of this principle where majorization works step by step until
A. Galindo   +10 more
core   +2 more sources

Rayleigh-Ritz majorization error bounds with applications to FEM [PDF]

open access: yes, 2009
The Rayleigh-Ritz (RR) method finds the stationary values, called Ritz values, of the Rayleigh quotient on a given trial subspace as approximations to eigenvalues of a Hermitian operator $A$.
Argentati, Merico E., Knyazev, Andrew V.
core   +1 more source

Quantum Heat Engines with Complex Working Media, Complete Otto Cycles and Heuristics

open access: yesEntropy, 2021
Quantum thermal machines make use of non-classical thermodynamic resources, one of which include interactions between elements of the quantum working medium.
Ramandeep S. Johal, Venu Mehta
doaj   +1 more source

Optimal common resource in majorization-based resource theories

open access: yesNew Journal of Physics, 2019
We address the problem of finding the optimal common resource for an arbitrary family of target states in quantum resource theories based on majorization, that is, theories whose conversion law between resources is determined by a majorization ...
G M Bosyk   +4 more
doaj   +1 more source

Entropic measures of joint uncertainty: effects of lack of majorization [PDF]

open access: yes, 2015
We compute R\'enyi entropies for the statistics of a noisy simultaneous observation of two complementary observables in two-dimensional quantum systems. The relative amount of uncertainty between two states depends on the uncertainty measure used.
Bosyk, Gustavo Martín   +2 more
core   +4 more sources

Estimations of divergence measures for majorization inequalities via Peano’s representation of Hermite’s polynomial [PDF]

open access: yesArab Journal of Mathematical Sciences
PurposeIn this paper applications to information theory are presented. Generalized majorization theorem is presented in term of different entropies and divergences. So that obtained results are generalized and comprehensive.Design/methodology/approachThe
Awais Rasheed   +3 more
doaj   +1 more source

On Majorization Uncertainty Relations in the Presence of a Minimal Length

open access: yesPhysics, 2022
The emergence of a minimal length at the Planck scale is consistent with modern developments in quantum gravity. This is taken into account by transforming the Heisenberg uncertainty principle into the generalized uncertainty principle.
Alexey E. Rastegin
doaj   +1 more source

On an upper bound for Sherman’s inequality

open access: yesJournal of Inequalities and Applications, 2016
Considering a weighted relation of majorization, Sherman obtained a useful generalization of the classical majorization inequality. The aim of this paper is to extend Sherman’s inequality to convex functions of higher order.
Slavica Ivelić Bradanović   +2 more
doaj   +1 more source

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