Quantum memories for light are a crucial resource for quantum repeaters and quantum networks. In this talk I will detail results over the course of my studies working with atomic frequency comb (AFC) quantum memories in rare earth ion-doped crystals and their place in development of a frequency multiplexed quantum repeater. I will detail our path through fabrication and spectroscopic studies to create improvements to the device properties of our quantum memories. This includes measurements of material and ion properties, fabrication of optical resonators out of bulk Garnet, and use of these devices for proof of principle quantum networking demonstrations. More specifically, and after some background, I will discuss some key results including: measurements of the magnetic hyperfine tensors of thulium ions in Yttrium Gallium Garnet (Tm: YGG), modeling the electronic dynamics of the ion absorption behavior in response to adiabatically shaped driving signals and in the presence of spectral diffusion, and creating impedance matched cavity AFC quantum memories for improved light matter absorption.
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Meeting ID: 933 0458 4361
INQNET (INtelligent Quantum NEtworks & Technologies, inqnet.caltech.edu) is a research program that aims to bring together academia, national laboratories, and industry to advance quantum science and technology and address relevant fundamental questions in physics.