Optomagnonic continuous-variable quantum teleportation enhanced by non-Gaussian distillation

TL;DR

This paper proposes a continuous-variable quantum teleportation protocol using optomagnonic systems, enhanced by non-Gaussian operations, to transfer various optical quantum states to magnon modes, advancing hybrid quantum networks.

Contribution

It introduces a novel teleportation scheme with non-Gaussian distillation to improve entanglement and fidelity in optomagnonic systems, enabling efficient photon-to-magnon quantum state transfer.

Findings

Enhanced teleportation fidelity with non-Gaussian operations.

Successful transfer of coherent, single-photon, squeezed, and cat states.

Guidance for experimental realization of magnonic quantum networks.

Abstract

The capability of magnons to coherently couple with various quantum systems makes them an ideal candidate to build hybrid quantum systems. The optomagnonic coupling is essential for constructing a hybrid magnonic quantum network, as the transmission of quantum information among remote quantum nodes must be accomplished using light rather than microwave field. Here we provide an optomagnonic continuous-variable quantum teleportation protocol, which enables the transfer of an input optical state to a remote magnon mode. To overcome the currently relatively weak coupling in the experiment, we introduce non-Gaussian distillation operations to enhance the optomagnonic entanglement and thus the fidelity of the teleportation. An auxiliary microwave cavity is adopted to realize the non-Gaussian and displacement operations on magnons. We show that a series of optical states, such as coherent, single-photon, squeezed and cat states, can be teleported to the magnon mode. The work provides guidance for the experimental realization of magnonic quantum repeaters and quantum networks and a new route to prepare diverse magnonic quantum states exploiting the photon-to-magnon quantum teleportation.