High-stability time-domain balanced homodyne detector for ultrafast optical pulse applications

TL;DR

This paper introduces a high-bandwidth, ultra-stable balanced homodyne detector designed for precise, low-noise optical measurements of ultrashort pulses, advancing quantum physics experiments and optical communication technologies.

Contribution

It presents a novel time-domain balanced homodyne detection scheme with enhanced stability, bandwidth, and noise performance for ultrafast optical pulse applications.

Findings

Achieved high stability and low noise in time-domain detection

Demonstrated suitability for quantum and classical light field characterization

Enhanced performance parameters for ultrafast optical measurements

Abstract

Low-noise, efficient, phase-sensitive time-domain optical detection is essential for foundational tests of quantum physics based on optical quantum states and the realization of numerous applications ranging from quantum key distribution to coherent classical telecommunications. Stability, bandwidth, efficiency, and signal-to-noise ratio are crucial performance parameters for effective detector operation. Here we present a high-bandwidth, low-noise, ultra-stable time-domain coherent measurement scheme based on balanced homodyne detection ideally suited to characterization of quantum and classical light fields in well-defined ultrashort optical pulse modes.