Work

Characterization of a photon-pair source based on a cold atomic ensemble using a cascade-level scheme

Year: 2018

Type: article

Abstract: We characterize a source of photon pairs based on cascade decay in a cold $^{87}\mathrm{Rb}$ ensemble. This source is particularly suited to generate photons for interaction with $^{87}\mathrm{Rb}$ based atomic systems. We experimentally investigate the dependence of pair generation rate, single photon heralding efficiency, and bandwidth as a function of the number of atoms, detuning, and intensity of the pump beams. The observed power and detuning behaviors can be explained by the steady-state solution of an established three-level model of an atom. Measurements presented here provide a useful insight on the optimization of this kind of photon-pair source.

Source: Physical Review A

DOI: 10.1103/physreva.98.023835

Authors: Alessandro Cerè, Bharath Srivathsan, Gurpreet Kaur Gulati, Brenda Chng, Christian Kurtsiefer

Institutions: Centre for Quantum Technologies, National University of Singapore

Language: English

Topic: Quantum optics and atomic interactions

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Research Foundation Singapore, Ministry of Education - Singapore

Award: G3717187498