Robust Photon Entanglement via Quantum Interference in Optomechanical Interfaces

TL;DR

This paper proposes schemes to generate robust photon entanglement in optomechanical systems by exploiting quantum interference effects, notably the Bogoliubov dark mode and destructive interference, to mitigate mechanical noise.

Contribution

It introduces novel interference-based schemes for robust photon entanglement in optomechanical interfaces, enhancing noise resilience compared to previous methods.

Findings

Achieves noise-robust continuous-variable entanglement.

Demonstrates discrete-state entanglement robustness.

Utilizes quantum interference effects similar to electromagnetically induced transparency.

Abstract

Entanglement is often the key element in quantum information protocols. Here, we present schemes to generate robust photon entanglement in optomechanical interfaces via quantum interference. The schemes explore the excitation of the Bogoliubov dark mode and the destructive quantum interference between the bright modes of the interface, similar to electromagnetically induced transparency, to eliminate leading-order effects of the mechanical noise. Both continuous-variable and discrete-state entanglements that are robust against the mechanical noise can be achieved.