Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Peter Rapčan"'
Publikováno v:
The European Physical Journal Special Topics. 229:759-772
We study the ground entangled state of the one-dimensional spin-1/2 Ising ferromagnet at its transverse-field critical point. When this problem is expressed in terms of independent fermions, we show that the usual thermostatistical sums emerging with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::091466ab8b1df21cfea109d187ceacb2
https://doi.org/10.1140/epjst/e2020-900003-3
https://doi.org/10.1140/epjst/e2020-900003-3
Publikováno v:
Physical and Mathematical Aspects of Symmetries ISBN: 9783319691633
We extend the free-energy formalism recently introduced for homogeneous Fokker–Planck equations to a wide class of inhomogeneous nonlinear Fokker–Planck equations, providing sufficient conditions for the equation coefficients to obtain a free-ene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e22c3c82d0fb3d86158f8901da1434a
https://doi.org/10.1007/978-3-319-69164-0_64
https://doi.org/10.1007/978-3-319-69164-0_64
Publikováno v:
Physical review. E. 94(6-1)
We extend a recently introduced free-energy formalism for homogeneous Fokker-Planck equations to a wide, and physically appealing, class of inhomogeneous nonlinear Fokker-Planck equations. In our approach, the free-energy functional is expressed in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eeb4a111f15c0df5aef121e65713269f
https://pubmed.ncbi.nlm.nih.gov/28085323
https://pubmed.ncbi.nlm.nih.gov/28085323
Publikováno v:
Physical Review A. 86
The decoherence rate is a nonlinear channel parameter that describes quantitatively the decay of the off-diagonal elements of a density operator in the decoherence basis. We address the question of how to experimentally access such a nonlinear parame
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32e5cff48575839fc55ae6a43087fcf4
https://doi.org/10.1103/physreva.86.052109
https://doi.org/10.1103/physreva.86.052109
Publikováno v:
Recercat. Dipósit de la Recerca de Catalunya
instname
Dipòsit Digital de Documents de la UAB
Universitat Autònoma de Barcelona
Physical Review A
Recercat: Dipósit de la Recerca de Catalunya
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname
Dipòsit Digital de Documents de la UAB
Universitat Autònoma de Barcelona
Physical Review A
Recercat: Dipósit de la Recerca de Catalunya
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Given an unknown state of a qudit that has already been measured optimally, can one still extract any information about the original unknown state? Clearly, after a maximally informative measurement, the state of the system `collapses' into a post-me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4c0da9fbcba30a70b8dc96271210c6b
https://ddd.uab.cat/record/115610
https://ddd.uab.cat/record/115610
We propose a scheme for unambiguous state comparison (USC) of two unknown squeezed vacuum states of an electromagnetic field. Our setup is based on linear optical elements and photon-number detectors, and achieves optimal USC in an ideal case of unit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69ec3f8a2a2b83fcbc57862965f847c5
http://arxiv.org/abs/1010.2937
http://arxiv.org/abs/1010.2937
We investigate dynamics of semi-quantal spin systems in which quantum bits are attached to classically and possibly stochastically moving classical particles. The interaction between the quantum bits takes place when the respective classical particle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39e9155cca7007541a17c150c0d5146d
http://arxiv.org/abs/0712.2136
http://arxiv.org/abs/0712.2136
We consider multi-qubit systems and relate quantitatively the problems of generating cluster states with high value of concurrence of assistance, and that of generating states with maximal bipartite entanglement. We prove an upper bound for the concu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b88d052071c8e22400b3997d1f9f0754
http://arxiv.org/abs/quant-ph/0503133
http://arxiv.org/abs/quant-ph/0503133