IQUIST Young Researchers Seminar: "Efficient, Broad Bandwidth Quantum Memory in Neutral Atomic Barium," presented by Kai Shinbrough
- Event Type
- Seminar/Symposium
- Sponsor
- IQUIST
- Location
- 190 Engineering Sciences Building, 1101 W Springfield Ave, Urbana, IL 61801
- Date
- Oct 26, 2022 12:00 - 12:50 pm
- Speaker
- Kai Shinbrough, Lorenz Group, Department of Physics, UIUC
- Contact
- Wolfgang Pfaff
- wpfaff@illinois.edu
- Views
- 121
- Originating Calendar
- IQUIST Young Researchers Seminar
Efficient, Broad Bandwidth Quantum Memory in Neutral Atomic Barium
Quantum memory -- the ability to store and retrieve photonic quantum states on-demand -- is an important primitive technology for photonic quantum applications. We report record storage efficiencies in the first atomic THz-bandwidth quantum memory. We present a novel Near-Off-Resonant Memory (NORM) quantum memory protocol in collisionally broadened hot atomic barium vapor, which we use to achieve 86% storage efficiency, 25% total efficiency, a time-bandwidth-product of 800, and single-photon fidelity of 0.9995. This work presents a solution to the efficiency-bandwidth tradeoff problem in atomic quantum memory.
This talk is intended for local QIS researchers at the University of Illinois; please do not share it more broadly.