Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session Q53: Quantum Networks: Modeling, Components and Demonstrations
3:00 PM–5:36 PM,
Wednesday, March 6, 2024
Room: 202AB
Sponsoring
Unit:
DQI
Chair: Allen Zang, University of Chicago
Abstract: Q53.00001 : Remote Quantum Networking with Single Rare-earth Ions: Bipartite Entanglement and Teleportation*
3:00 PM–3:12 PM
Presenter:
Andrei Ruskuc
(Caltech)
Authors:
Andrei Ruskuc
(Caltech)
Chun-Ju Wu
(Caltech)
Emanuel Green
(Caltech)
Sophie Hermans
(California Institute of Technology)
Joonhee Choi
(Stanford)
Andrei Faraon
(Caltech)
We apply a novel entanglement protocol to remote 171Yb ions that demonstrates two key milestones:
1. Optical lifetime-limited entanglement rates and fidelities, even in the presence of spectral diffusion;
2. Entanglement of optically distinguishable spin qubits without optical frequency shifting.
Counteracting both static and dynamic disorder in optical transition frequencies is achieved using the stochastic detection time of a heralding photon to tailor subsequent optical and spin quantum gates in real-time. We also apply a modified version of this protocol to probabilistically teleport quantum states between the two ions.
These results challenge conventional wisdom regarding limitations on entanglement protocols imposed by optical Ramsey coherence times. Furthermore, the narrow optical inhomogeneity of 171Yb:YVO4 (200 MHz) enables entanglement distribution between any pair of 171Yb qubits with commercially available detector technology. These results showcase single rare-earth ions as a scalable platform for the future quantum internet.
*AFOSR FA9550-22-1-0178NSF 2210570IQIM - 2317110
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