800 nm pumped SPDC from chirped crystals

TL;DR

This paper investigates how crystal chirp influences SPDC at 800 nm, demonstrating its potential to tailor the frequency and momentum properties of generated light for quantum information uses.

Contribution

It provides a detailed analysis of how internal (chirp, length) and external (temperature, pump properties) parameters affect SPDC in chirped crystals, highlighting their utility for versatile light source design.

Findings

Chirped crystals produce a distinctive pop tab-like spectral distribution.

Manipulation of frequency and transverse momentum is feasible with chirped crystals.

Potential applications in quantum information processing are discussed.

Abstract

We consider crystal chirp effects on SPDC when pumping at 800 nm. The typical distribution produced in frequency-momentum space is a pop tab-like structure which turns out to be suitable for the implementation of versatile light sources. Our analyzes consider the effect of internal and external parameters in the process; in the former we include the crystal chirp and length, while in the latter temperature, as well as pump chirp and beam properties. We report evidence of the appropriateness of SPDC from chirped crystals to manipulate the frequency and transverse momentum properties of the light produced. We briefly comment on potential usefulness of the types of light produced, in particular for quantum information applications.