Dissipative Long-Range Entanglement Generation between Electronic Spins

TL;DR

This paper presents a robust method for long-range entanglement generation between electronic spins in quantum dots using dissipative dynamics and a quantum bus, enabling stable quantum communication over tens of micrometers.

Contribution

It introduces a novel scheme combining dissipative stabilization with quantum bus-mediated coupling for long-range entanglement of electronic spins.

Findings

Achieves deterministic entanglement between distant spins.

Demonstrates robustness against noise and imperfections.

Utilizes quantum Hall edge channels or surface acoustic waves as quantum buses.

Abstract

We propose a scheme for deterministic generation and long-term stabilization of entanglement between two electronic spin qubits confined in spatially separated quantum dots. Our approach relies on an electronic quantum bus, consisting either of quantum Hall edge channels or surface acoustic waves, that can mediate long-range coupling between localized spins over distances of tens of micrometers. Since the entanglement is actively stabilized by dissipative dynamics, our scheme is inherently robust against noise and imperfections.