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The European Physical Journal D

, Volume 62, Issue 2, pp 273–277 | Cite as

Entanglement witnesses for d ⊗ d systems and new classes of entangled qudit states

  • D. ChruścińskiEmail author
  • A. Rutkowski
Regular Article

Abstract

We provide a new class of entanglement witnesses for dd systems (two qudits). Our construction generalizes the one proposed recently by Jafarizadeh et al. for d = 3 and d = 4 on the basis of semidefinite linear programming. Moreover, we provide a new class of PPT entangled states detected by our witnesses which generalizes well known family of states constructed by Horodecki et al. for d = 3.

Keywords

Quantum State Entangle State Separable State Quantum Entanglement Hermitian Operator 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.Institute of PhysicsNicolaus Copernicus UniversityToruńPoland

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