ar X iv : q ua nt - p h / 05 03 10 3 v 1 1 0 M ar 2 00 5 Schwarz inequality and concurrence
نویسندگان
چکیده
We establish a relation between the Schwarz inequality and the generalized concurrence of an arbitrary, pure, bipartite or tripartite state. This relation places concurrence in a geometrical and functional-analytical setting.
منابع مشابه
ar X iv : q ua nt - p h / 00 03 05 7 1 5 M ar 2 00 0 1 Bell ' s Theorem and Nonlinear Systems
For all Einstein-Podolsky-Rosen-type experiments on deterministic systems the Bell inequality holds, unless non-local interactions exist between certain parts of the setup. Here we show that in nonlinear systems the Bell inequality can be violated by non-local effects that are arbitrarily weak. Then we show that the quantum result of the existing Einstein-PodolskyRosen-type experiments can be r...
متن کاملar X iv : q ua nt - p h / 06 05 10 3 v 1 1 1 M ay 2 00 6 On Concurrence and Entanglement of Rank Two Channels
Concurrence and further entanglement quantifiers can be computed explicitly for channels of rank two if representable by just two Kraus operators. Almost all details are available for the subclass of rank two 1-qubit channels. There is a simple geometric picture beyond, explaining nicely the role of anti-linearity.
متن کاملar X iv : q ua nt - p h / 06 05 10 3 v 1 1 1 M ay 2 00 6 On Concurrence and Entanglement of Rank Two Channels ∗ Armin Uhlmann
Concurrence and further entanglement quantifiers can be computed explicitly for channels of rank two if representable by just two Kraus operators. Almost all details are available for the subclass of rank two 1-qubit channels. There is a simple geometric picture beyond, explaining nicely the role of anti-linearity.
متن کاملar X iv : q ua nt - p h / 03 10 05 9 v 2 1 0 O ct 2 00 3 Dispersion Relations and Relativistic Causality
In this paper we show that if the refractive index, or rather, [n(ω) − 1] satisfies the dispersion relations then, it is implied by Titchmarsh's theorem that, n(ω) → 1 as ω → ∞. Any other limiting value for n(ω) would violate relativistic causality, by which we mean not only that cause must precede effect but also that signals cannot travel faster–than–c, the velocity of light in a vacuum.
متن کاملar X iv : q ua nt - p h / 03 10 05 9 v 3 3 0 O ct 2 00 3 Dispersion Relations and Relativistic Causality
In this paper we show that if the refractive index, or rather, [n(ω) − 1] satisfies the dispersion relations then, it is implied by Titchmarsh's theorem that, n(ω) → 1 as ω → ∞. Any other limiting value for n(ω) would violate relativistic causality, by which we mean not only that cause must precede effect but also that signals cannot travel faster–than–c, the velocity of light in a vacuum.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005