Stimulating the Quantum Aspects of an Optical Analog White-Black Hole

TL;DR

This paper combines analytical and numerical methods to study quantum effects in an optical analog of a white-black hole, focusing on the Hawking effect and how noise and inefficiencies impact its observability.

Contribution

It introduces a comprehensive approach to analyze quantum phenomena in optical analog black holes and proposes a protocol to enhance the detection of quantum effects.

Findings

Quantum entanglement is highly sensitive to noise and inefficiencies.

The parameter space for observing Hawking-like effects is identified.

A protocol using single-mode squeezed input can amplify quantum signals.

Abstract

This work introduces a synergistic combination of analytical methods and numerical simulations to study the propagation of weak wave-packet modes in an optical medium containing the analog of a pair white-black hole. We apply our tools to analyze several aspects of the evolution, such as (i) the region of the parameter space where the analogy with the Hawking effect is on firm ground and (ii) the influence that ambient thermal noise and detector inefficiencies have on the observability of the Hawking effect. We find that aspects of the Hawking effect that are of quantum origin, such as quantum entanglement, are extremely fragile to the influence of inefficiencies and noise. We propose a protocol to amplify and observe these quantum aspects, based on seeding the process with a single-mode squeezed input.