Nonmaximally entangled states can be better for multiple linear optical teleportation

TL;DR

This paper demonstrates that nonmaximally entangled states can outperform maximally entangled states in multiple linear optical teleportation by enabling error correction and increasing overall success probability.

Contribution

It reveals that nonmaximally entangled states can improve success rates in multiple teleportations by correcting errors, challenging the conventional preference for maximally entangled states.

Findings

Nonmaximally entangled states can correct errors in successive teleportations.

Success probability is higher with nonmaximally entangled states in multiple teleportations.

Error correction enables improved performance over maximally entangled states.

Abstract

We investigate multiple linear optical teleportation in the Knill-Laflamme-Milburn scheme with both maximally and nonmaximally entangled states. We show that if the qubit is teleported several times via nonmaximally entangled state then the errors introduced in the previous teleportations can be corrected by the errors introduced in the following teleportations. This effect is so strong that it leads to another interesting phenomenon, i.e., the total probability of successful multiple linear optical teleportation is higher for nonmaximally entangled states than maximally entangled states.