Multiresonator quantum memory-interface

TL;DR

This paper demonstrates a broadband microwave quantum memory-interface using a multiresonator system with controllable tuning, achieving 16.3% efficiency at room temperature, and discusses potential improvements at low temperatures.

Contribution

The paper introduces an experimental broadband microwave quantum memory scheme with controllable mini-resonators, advancing quantum memory technology.

Findings

Achieved 16.3% storage efficiency at room temperature.

Implemented controllable tuning of mini-resonator frequencies.

Discussed potential for high-Q resonators at low temperatures.

Abstract

In this paper we experimentally demonstrated a broadband microwave scheme suitable for the multiresonator quan- tum memory-interface. The microwave scheme consists of the system of composed mini-resonators strongly inter- acting with a common broadband resonator coupled with the external microwave waveguide. We have implemented the controllable tuning of the mini-resonator frequencies and coupling of the common resonator with the external waveguide for the implementation of the impedance matched quantum storage. The storage of microwave pulses with an efficiency of 16.3% has been shown experimentally at room temperature. The possible properties of the proposed scheme for mini-resonators with high-Q at low temperatures are discussed. The obtained results pave the way for the implementation of superefficient broadband microwave quantum memory-interface.