Polarization fluctuation as an entanglement monotone for entangled two-level systems

Authors

Aura Mae B Villaruel; Francis N. C. Paraan

Source

Proceedings of the AQIS Conference 2015, Korea Institute for Advanced Study, Seoul, 271-272 (2015).

Abstract

In a pure system consisting of a two-level atom (qubit) entangled with an arbitrary environment, the polarization fluctuation about the Schmidt axis is shown to preserve majorization. This polarization fluctuation is additive over independent two-level systems and is proposed to be an experimentally accessible entanglement monotone for a generic gas of two-level atoms entangled with a common bath.