Teleportation protocols with non-Gaussian operations: conditional photon subtraction versus cubic phase gate

TL;DR

This paper compares three quantum teleportation protocols, demonstrating that the cubic phase gate protocol achieves higher fidelity than photon subtraction and original schemes for teleporting squeezed and cat states.

Contribution

It introduces a comparison of teleportation protocols incorporating non-Gaussian operations, highlighting the superior performance of the cubic phase gate in fidelity.

Findings

Cubic phase gate protocol outperforms others in fidelity

Higher fidelity achieved for both squeezed and cat states

Non-Gaussian operations enhance teleportation quality

Abstract

In our work, we compare three teleportation protocols: the original protocol, the photon subtraction protocol, and the protocol with a cubic phase gate. We evaluate the fidelity of each protocol using the example of teleportation of the squeezed state and the Schrodinger's cat state. We show that, under equal conditions, the teleportation scheme with a cubic phase gate achieves significantly higher fidelity than the other protocols considered.