Generating entangled fermions by accelerated measurements on the vacuum

TL;DR

This paper demonstrates that accelerated measurements on the vacuum of a Dirac field generate entangled fermionic states for inertial observers, with entanglement increasing with acceleration and reaching Bell states at infinite acceleration.

Contribution

It introduces a novel method of producing entangled fermions through accelerated measurements, linking the Davies-Unruh effect to entanglement generation.

Findings

Entanglement increases with acceleration.

Maximal entanglement at infinite acceleration.

Bell states are produced in the asymptotic limit.

Abstract

It is shown that accelerated projective measurements on the vacuum of a free Dirac spinor field results in an entangled state for an inertial observer. The physical mechanism at work is the Davies-Unruh effect. The produced state is always entangled and its entanglement increases as a function of the acceleration, reaching maximal entanglement in the asymptotic limit of infinite acceleration where Bell states are produced.