Bound entanglement is not Lorentz invariant

Autor(en)

Paweł Caban, Beatrix C. Hiesmayr

Abstrakt

Bound entanglement, in contrast to free entanglement, cannot be distilled into maximally entangled states by two local observers applying measurements and utilizing classical communication. In this paper we ask whether a relativistic observer classifies states according to being separable, bound or free entangled in the same manner as an unboosted observer. Surprisingly, this turns out not to be the case. And that even if the system in a given inertial frame of reference is separable with respect to the partition momenta versus spins. In detail, we show that if the spin state is initially bound entangled, some boosted observers observe their spin states to be either bound entangled, separable or free entangled. This also explains why a general measure of the entanglement property is difficult to find.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

University of Lodz

Journal

Scientific Reports

Band

13

Anzahl der Seiten

8

ISSN

2045-2322

DOI

https://doi.org/10.48550/arXiv.2212.01286

Publikationsdatum

07-2023

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik

ASJC Scopus Sachgebiete

General

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/a9b71f81-25d6-4312-8ef2-5515f2462285