Low-cost nanosecond electronic coincidence detector

TL;DR

This paper introduces an affordable, fast electronic coincidence detector with adjustable timing, capable of precise measurements in quantum optics experiments involving Bose-Einstein distributed photocounts.

Contribution

It presents a simple, low-cost design of a nanosecond coincidence detector with negligible dead time and adjustable window, suitable for quantum optics applications.

Findings

Effective coincidence detection with adjustable 1 ns window.

Successful measurement of Bose-Einstein distributed photocounts.

Low dead time and TTL-compatible interface achieved.

Abstract

We present a simple and low-cost implementation of a fast electronic coincidence detector based on PECL logic with a TTL-compatible interface. The detector has negligible dead time and the coincidence window is adjustable with a minimum width of 1 ns. Coincidence measurements of two independent sources of Bose-Einstein distributed photocounts are presented using different coincidence window widths.