Entanglement generation between distant spins via quasilocal reservoir engineering

TL;DR

This paper demonstrates how entanglement can be generated between distant quantum spins through engineered dissipation using quasilocal reservoirs, challenging the view that dissipation is solely detrimental.

Contribution

It introduces a method for entangling distant spins via reservoir engineering, enabling entanglement without direct interaction or shared reservoirs.

Findings

Entanglement can be generated between non-interacting spins.

Distant spins coupled to different reservoirs can become entangled.

Reservoir engineering enables entanglement in multi-spin systems.

Abstract

The generation and preservation of entanglement is a central goal in quantum technology. Traditionally, dissipation in quantum systems is thought to be detrimental to entanglement, however dissipation can also be utilised as a means of generating entanglement between quantum spins that are not directly interacting. In particular entanglement can be generated between two qubits, or multi qubit systems via a collective coupling to a reservoir. In this work, we explore multiple spin domains pairwise coupled to different reservoirs and show that entanglement can be generated between spins which are not coupled to each other, or even coupled to the same reservoir.