Quantum teleportation of propagating quantum microwaves

R Di Candia,A Marx,L Zhong,R Gross,Ep Menzel,F Deppe,M Sanz,E Solano,S Felicetti,Kg Fedorov

doi:10.1140/epjqt/s40507-015-0038-9

Abstract

Propagating quantum microwaves have been proposed and successfully implemented to generate entanglement, thereby establishing a promising platform for the realisation of a quantum communication channel. However, the implementation of quantum teleportation with photons in the microwave regime is still absent. At the same time, recent developments in the field show that this key protocol could be feasible with current technology, which would pave the way to boost the field of microwave quantum communication. Here, we discuss the feasibility of a possible implementation of microwave quantum teleportation in a realistic scenario with losses. Furthermore, we propose how to implement quantum repeaters in the microwave regime without using photodetection, a key prerequisite to achieve long distance entanglement distribution.

Highlights

In, CH Bennett et al [ ] proposed a protocol to disassemble a quantum state at one location (Alice) and to reconstruct it in a spatially separated location (Bob)
As the entanglement distribution step is affected by losses, we present in Section how to implement a quantum repeater based on weak measurements in a circuit quantum electrodynamics (cQED) setup, in order to allow the entanglement sharing at larger distances
The high electronic mobility transistor (HEMT) quadrature noise can realistically reach a value of AH, and this gives us an upper bound to the Josephson parametric amplifier (JPA) quadrature noise in order for the quantum teleportation protocol to work, i.e. AJ

Summary

Introduction

In , CH Bennett et al [ ] proposed a protocol to disassemble a quantum state at one location (Alice) and to reconstruct it in a spatially separated location (Bob). We discuss the possibility of implementing the quantum teleportation protocol of propagating electromagnetic quantum signals in the microwave regime. The two entangled beams could be used to perform with microwaves a protocol equivalent to the one used in optical quantum teleportation [ , ].

Results

Conclusion