Entanglement measures as physical observables
نویسندگان
چکیده
منابع مشابه
Entanglement measures
Theory of quantifying entanglement is reviewed in a uni ed framework. The subject is divided with respect to nite and asymptotic regime, as well as abstract and operational approach. Important measures are presented within four classes according to di erent methods of construction. The relations between postulates for asymptotic and nite regime are clari ed. Many results are formulated based on...
متن کاملLimits for entanglement measures.
The basic principle of entanglement processing says that entanglement cannot increase under local operations and classical communication. Based on this principle, we show that any entanglement measure E suitable for the regime of a high number of identically prepared entangled pairs satisfies ED < or = E < or = EF, where ED and EF are the entanglement of distillation and formation, respectively...
متن کاملGeometric multipartite entanglement measures
We report on a geometric formulation of multipartite entanglement measures which sets a generalization of the partial formulation of a few-qubit entanglement scenario reported in Ref. [1]. By means of the permutation group of N = 3 elements, we first propose a measure which satisfactorily reproduces the entanglement values reported in the literature for tripartite entangled states. We then give...
متن کاملAlgebraic Measures of Entanglement
We study the rank of a general tensor u in a tensor product space H1 ⊗ · · · ⊗ Hk. The rank of u is the minimal number p of pure states v1, · · · , vp such that u is a linear combination of the vj ’s. This rank is an algebraic measure of the degree of entanglement of u. Motivated by quantum computation, we completely describe the rank of an arbitrary tensor in (C) and give normal forms for tens...
متن کاملObservables Generalizing Positive Operator Valued Measures
We discuss a generalization of POVM which is used in quantum-like modeling of mental processing.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Physics B
سال: 2007
ISSN: 0946-2171,1432-0649
DOI: 10.1007/s00340-007-2864-7