# Observing sub-Poissonian statistics of twisted single photons using oscilloscope

## TL;DR

This paper demonstrates the observation of sub-Poissonian photon statistics in twisted single photons with orbital angular momentum using simple detection equipment, advancing the understanding of quantum light sources.

## Contribution

It introduces a method to observe sub-Poissonian statistics of twisted photons using only photo detectors and an oscilloscope, simplifying quantum optics measurements.

## Key findings

- Sub-Poissonian statistics observed in twisted single photons.
- Method uses standard photo detectors and oscilloscope, no specialized photon counters.
- Supports development of quantum information technologies with structured light.

## Abstract

Heralded single photon sources (HSPS) from spontaneous parametric down-conversion are widely used as single photon sources. We study the photon number statistics of an HSPS carrying orbital angular momentum in our laboratory and observe the sub-Poissonian statistics using only photo detectors and an oscilloscope.