Teleportation of atomic states via position measurements

TL;DR

This paper proposes a cavity QED-based scheme for teleporting unknown atomic states conditionally, utilizing atomic position measurements and the optical Stern-Gerlach model, achieving a 50% success probability without complex entanglement projections.

Contribution

It introduces a novel teleportation protocol that leverages atomic translational degrees of freedom and local measurements, avoiding the need for entanglement projections or strict interaction timing.

Findings

Successful teleportation probability of 1/2

No need for projection onto highly entangled states

Operates with local measurements of cavity photons and atomic positions

Abstract

We present a scheme for conditionally teleporting an unknown atomic state in cavity QED, which requires two atoms and one cavity mode. The translational degrees of freedom of the atoms are taken into account using the optical Stern-Gerlach model. We show that successful teleportation with probability 1/2 can be achieved through local measurements of the cavity photon number and atomic positions. Neither direct projection onto highly entangled states nor holonomous interaction-time constraints are required.