A class of entanglement witnesses and a realignment-like criterion.

• Tác giả: Dariusz Chruściński, Vahid Jannesary, Vahid Karimipour
• Ngôn ngữ: eng
• Ký hiệu phân loại: 371.1024 Teachers and teaching, and related activities
• Thông tin xuất bản: England : Scientific reports , 2025
• Bộ sưu tập: NCBI
• ID: 184070

Tóm tắt

We present a multi-parameter family of positive maps between spaces of arbitrary but finite dimensions. This framework facilitates the construction of Entanglement Witnesses (EWs) specifically designed for systems living in [Formula: see text] dimensions. A sufficient condition for positivity is presented. Interestingly, it is shown that all EWs constructed this way are equivalent to a single realignment-like criterion which for [Formula: see text] and [Formula: see text] are different is in general stronger than the original realignment criterion. We illustrate effectiveness of this criterion considering examples of Positive Partial Transpose entangled states in [Formula: see text] and [Formula: see text] dimensions.