Generation of time-bin entangled photons without temporal post-selection

TL;DR

This paper introduces a novel interferometric method for generating time-energy entangled photon pairs that eliminates the need for temporal post-selection, enabling use with lasers of short coherence time.

Contribution

The paper presents a new interferometric scheme for entangling photons in time-energy without post-selection, improving practicality and compatibility with various laser sources.

Findings

Successful implementation of the new scheme

Entangled photon pairs generated without temporal post-selection

Compatible with lasers of short coherence time

Abstract

We report on the implementation of a new interferometric scheme that allows the generation of photon pairs entangled in the time-energy degree of freedom. This scheme does not require any kind of temporal post-selection on the generated pairs and can be used even with lasers with short coherence time.