Chiral Bell-state transfer via dissipative Liouvillian dynamics

TL;DR

This paper demonstrates chiral transfer of Bell states using dissipative Liouvillian dynamics, enabling high-fidelity entanglement generation and control in quantum information processing.

Contribution

It introduces the first application of chiral state transfer in quantum information, utilizing dissipation engineering for entanglement control.

Findings

Chiral state transfer enables high-fidelity Bell state production.

Quantum jump removal via postselection enhances Bell state quality.

Chiral transfer is effective over a wide parameter range.

Abstract

Chiral state transfer along closed loops in the vicinity of an exceptional point is one of the many counter-intuitive observations in non-Hermitian physics. The application of this property beyond proof-of-principle in quantum physics, is an open question. In this work, we demonstrate chiral state conversion between singlet and triplet Bell states through fully-quantum Liouvillian dynamics. Crucially, we demonstrate that this property can be used for the chiral production of Bell states from separable states with a high fidelity and for a large range of parameters. Additionally, we show that the removal of quantum jumps from the dynamics through postselection can result in near-perfect Bell states from initially separable states. Our work presents the first application of chiral state transfer in quantum information processing and demonstrates a novel way to control entangled states by means of dissipation engineering.