Abstract
We describe a quantum memory spectral preparation strategy that optimizes memory efficiency and bandwidth in materials such as : in a high-field regime, where the hyperfine structure is resolved. We demonstrate the method in : by preparing spectrally isolated 18-dB-absorbing features on a dB background. Using these features we create an atomic frequency comb and show a quantum storage of 200-ns pulses with 22% efficiency, limited by the background absorption which arises from laser instability. We describe the experimental improvements needed to reach the material limits: -s spin-state storage, bandwidth, and efficiency.
- Received 21 April 2021
- Revised 8 July 2021
- Accepted 21 July 2021
DOI:https://doi.org/10.1103/PhysRevResearch.3.L032054
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Published by the American Physical Society