Bulletin of the American Physical Society
55th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Monday–Friday, June 3–7, 2024; Fort Worth, Texas
Session R06: Quantum Networking
2:00 PM–4:00 PM,
Thursday, June 6, 2024
Room: 202CD
Chair: POONAM YADAV, Indian Institute of Technology Delhi
Abstract: R06.00004 : Remote Entanglement of Single Rare-earth Ion Qubits Coupled to Nanophotonic Cavities*
2:36 PM–2:48 PM
Presenter:
Andrei Ruskuc
(Caltech)
Authors:
Andrei Ruskuc
(Caltech)
Chun-Ju Wu
(Caltech)
Joonhee Choi
(Stanford)
Sophie Hermans
(California Institute of Technology)
Emanuel Green
(Caltech)
Andrei Faraon
(Caltech)
We introduce a novel approach to entanglement generation that uses frequency erasing photon detection combined with real-time quantum control based on feedforward of photon detection times. This protocol eliminates the deleterious effect of dynamic optical inhomogeneity, whilst leveraging static inhomogeneity for frequency-multiplexed entanglement distribution.
We demonstrate entanglement of single rare-earth ion qubits in solid state hosts (171Yb:YVO4) coupled to two remote nanophotonic cavities. We herald two-qubit Bell States using a single-photon detection with fidelities of 0.723 at rates of 3.1Hz. Two-photon protocols boost the fidelity to 0.84 at the cost of a reduced 17mHz rate. Furthermore, we prepare and analyze tripartite entangled W-states of three optically distinguishable 171Yb qubits.
These results demonstrate the intrinsic scalability and robustness of our combined quantum-networking platform and protocol, laying the foundation for the future quantum internet.
*AFOSRĀ (FA9550-22-1-0178)IQIM, an NSF Physics Frontiers Center (PHY-1733907)
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