Degradation of entanglement in moving frames

TL;DR

This paper investigates how entanglement between two particles degrades when observed from moving frames, showing that relativistic effects can eliminate distillable entanglement in the ultra-relativistic limit.

Contribution

It demonstrates that relativistic motion causes degradation of bipartite entanglement, leading to loss of distillability in the ultra-relativistic regime, a novel insight into relativistic quantum information.

Findings

Entanglement degrades with increasing observer velocity.

In the ultra-relativistic limit, entanglement becomes non-distillable.

Degradation depends on the initial state parameter lpha.

Abstract

The distillability of bipartite entangled state as seen by moving observers has been investigated. It is found that the same initial entanglement for a state parameter $\alpha$ and its "normalized partner" $\sqrt{1-\alpha^2}$ will be degraded as seen by moving observer. It is shown that in the ultra relativistic limit, the state does not have distillable entanglement for any $\alpha$.