5 papers
Every PPT channel has finite entanglement breaking index
Sang-Jun Park
We prove that every PPT linear map has finite entanglement breaking index, thereby establishing the eventual entanglement breaking property of PPT channels in full generality. Furt…
A solution to 2-copy distillability of Werner states
Jinshi Fu, Li Gao, Sang-Jun Park
Entanglement distillation is a fundamental task in quantum information theory. In this work, we prove that Werner states in arbitrary dimension are -copy distillable if and only…
-positivity and Schmidt number under orthogonal group symmetries
Sang-Jun Park, Sang-Gyun Youn
In this paper, we study -positivity and Schmidt number under standard orthogonal group symmetries. The Schmidt number is a natural quantification of entanglement in quantum info…
A universal framework for entanglement detection under group symmetry
Sang-Jun Park, Yeong-Gwang Jung, Jeongeun Park +1
One of the most fundamental questions in quantum information theory is PPT-entanglement of quantum states, which is an NP-hard problem in general. In this paper, however, we prove…
Gaussian quantum information over general quantum kinematical systems I: Gaussian states
Cedric Beny, Jason Crann, Hun Hee Lee +2
We develop a theory of Gaussian states over general quantum kinematical systems with finitely many degrees of freedom. The underlying phase space is described by a locally compact…