Room-Temperature Photon-Number-Resolved Detection Using A Two-Mode Squeezer

TL;DR

This paper proposes a room-temperature, high-efficiency photon-number-resolving detector based on a two-mode squeezer, capable of distinguishing input photon numbers through measurable jumps in coincidence counts.

Contribution

It introduces a novel method for photon-number resolution at room temperature using a two-mode squeezing device, enabling practical quantum detection.

Findings

Coincidence counts reveal input photon number with measurable jumps.

The device can operate efficiently at room temperature.

Potential for practical quantum photon detection applications.

Abstract

We study the average coincidence-count signal at the output of a two-mode squeezing device with $|N\rangle\otimes|\alpha\rangle$ as the two input modes. We show that the input photon-number can be resolved from the average coincidence counts. In particular, we show jumps in the average coincidence-count signal as a function of input photon-number $N$. Therefore, we propose that such a device may be deployed as photon-number-resolving detector at room temperature with high efficiency.