Title

Poisson Spot: Single Photon Interference

Document Type

Poster

Campus where you would like to present

Ellensburg

Event Website

https://digitalcommons.cwu.edu/source

Start Date

18-5-2020

Abstract

In the Poisson Spot experiment electromagnetic waves obstructed by a circular object display a localized bright spot centered in the shadow. Classically this demonstration is explained by interference due to the wave nature of light; however, photon interference should exhibit the same effect. In this experiment a novel method was introduced for the investigation of the Poisson Spot phenomenon under the constraints of a source of single photons. Utilizing spontaneous parametric down conversion, two photons were detected in coincidence by avalanche photodiodes. The path of one of the photons was then obstructed by a small ball bearing. Preliminary data obtained exhibits evidence of a Poisson Spot constituted by single photon interactions similar in form to the classical phenomenon.

Faculty Mentor(s)

Michael Braunstein

Department/Program

Physics

Additional Mentoring Department

https://cwu.studentopportunitycenter.com/2020/04/poisson-spot-single-photon-interference/

Share

COinS
 
May 18th, 12:00 AM

Poisson Spot: Single Photon Interference

Ellensburg

In the Poisson Spot experiment electromagnetic waves obstructed by a circular object display a localized bright spot centered in the shadow. Classically this demonstration is explained by interference due to the wave nature of light; however, photon interference should exhibit the same effect. In this experiment a novel method was introduced for the investigation of the Poisson Spot phenomenon under the constraints of a source of single photons. Utilizing spontaneous parametric down conversion, two photons were detected in coincidence by avalanche photodiodes. The path of one of the photons was then obstructed by a small ball bearing. Preliminary data obtained exhibits evidence of a Poisson Spot constituted by single photon interactions similar in form to the classical phenomenon.

https://digitalcommons.cwu.edu/source/2020/COTS/96