Noise-free on-demand atomic frequency comb quantum memory

We present an extension of the atomic frequency comb protocol that utilizes Stark effect to perform noise-free, on-demand, control. An experimental realization this was implemented in Pr3+:Y2SiO5 solid-state system, and a recall efficiency 38% for 0.8 ?s storage time achieved. Experiments were performed with both bright pulses as well weak-coherent states, latter achieving signal-to-noise ratio 570±120 using input average photon number ?0.1. The principal limitation longer found be minimum peak width attainable Pr3+:Y2SiO5. employ adaptation established model investigate wide-bandwidth, memory based on Eu3+:Y2SiO5. From this, we determine long 100 may practical even without recourse spin-wave storage.Received 7 July 2020Accepted 22 March 2021DOI:https://doi.org/10.1103/PhysRevResearch.3.023099Published by American Physical Society under terms Creative Commons Attribution 4.0 International license. Further distribution work must maintain attribution author(s) published article's title, journal citation, DOI.Published SocietyPhysics Subject Headings (PhySH)Research AreasQuantum communicationQuantum memoriesQuantum opticsPhysical SystemsRare-earth doped crystalsTechniquesCoherent controlQuantum InformationAtomic, Molecular & Optical