# A novel delayed-choice experimental proposal testing local decisions

## TL;DR

This paper proposes a modified delayed-choice experimental setup to test nonlocal features of entangled states, revealing that local properties like transmissivity can exhibit quantum correlations.

## Contribution

It introduces a novel experimental proposal that extends delayed-choice experiments to test local properties of entanglement.

## Key findings

- Delayed-choice can be applied to local properties of entangled states.
- Modified setup enables testing of nonlocal correlations in local parameters.
- The proposal offers a new way to explore quantum nonlocality.

## Abstract

Entangled states are notoriously non-separable, their sub-ensembles being only statistical mixtures yielding no coherences and no quantum interference phenomena. The interesting features of entangled states can be revealed only by coincidence counts over the (typically) two sub-ensembles of the system. In this paper we show that this feature extends to properties thought to be local, for example the transmissivity coefficient of a beam splitter. We discuss a well-known experimental setup and propose modifications, so that delayed-choice can be added and this new feature of entanglement tested.