Spectrally improved controllable frequency comb quantum memory

TL;DR

This paper introduces a universal broadband quantum memory scheme using a controllable frequency comb formed by three microresonators, demonstrating high efficiency and scalability for quantum information storage.

Contribution

It presents a novel microresonator-based quantum memory architecture with optimized parameters and a method to scale spectral range while preserving efficiency.

Findings

High-efficiency light storage demonstrated

Scalable architecture for broader spectral range

Optimal microresonator parameters identified

Abstract

We propose a scheme of a universal block of broadband quantum memory consisting of three ring microresonators forming a controllable frequency comb and interacting with each other and with a common waveguide. We find the optimal parameters of the microresonators showing the possibility of highly efficient storage of light fields on this memory block and we demonstrate the procedure for gluing several memory blocks for increasing spectral range of the composite quantum memory while maintaining high efficiency.