Entangling Pairs of Nano-Cantilevers, Cooper-Pair Boxes and Mesoscopic Teleportation

TL;DR

This paper proposes two innovative schemes to entangle mesoscopic quantum systems, such as nano-mechanical oscillators and Cooper pair boxes, using third-party mediators, enabling entanglement detection via teleportation and robust entanglement in thermal environments.

Contribution

It introduces novel protocols for entangling mesoscopic systems through mediators, including non-Gaussian states and measurement-free methods under decoherence.

Findings

Successful entanglement of nano-mechanical oscillators via Cooper pair box.

Entanglement detection equivalent to teleportation in a mesoscopic context.

Robust entanglement of Cooper pair qubits through a thermal nano-mechanical oscillator.

Abstract

We propose two schemes to establish entanglement between two mesoscopic quantum systems through a third mesoscopic quantum system. The first scheme entangles two nano-mechanical oscillators in a non-Gaussian entangled state through a Cooper pair box. Entanglement detection of the nano-mechanical oscillators is equivalent to a teleportation experiment in a mesoscopic setting. The second scheme can entangle two Cooper pair box qubits through a nano-mechanical oscillator in a thermal state without using measurements in the presence of arbitrarily strong decoherence.