Progress towards a three-node ion-trap quantum network

George Toh; Jameson O'Reilly; Sagnik Saha; Mikhail Shalaev; Isabella Goetting; Tingguang Li; Christopher Monroe

doi:10.1117/12.2657155

8 March 2023 Progress towards a three-node ion-trap quantum network

George Toh, Jameson O'Reilly, Sagnik Saha, Mikhail Shalaev, Isabella Goetting, Tingguang Li, Christopher Monroe

Proceedings Volume 12446, Quantum Computing, Communication, and Simulation III; 124460P (2023) https://doi.org/10.1117/12.2657155
Event: SPIE Quantum West, 2023, San Francisco, California, United States

Abstract

Trapped ions are one of the leading platforms for quantum computation and networking, with long coherence times and high fidelity qubit operation. We exploit these attributes to build a quantum network with the use of three trapped ion modules connected via photonic links. In each of these systems, we have ions of different species for use as memory or communication qubits. Our newest module contains two high NA=0.8 objectives, each covering 20% of the solid angle of photons emitted from the ion, making it suitable for use as the middle node of the network. Photons are collected from each chamber, and we generate remote entanglement between each pair of nodes by interfering the photons on a beamsplitter. This heralds entanglement of the communication ions in the pair of network nodes, which we then swap onto the memory qubits. I will discuss our progress towards creating a Greenberger–Horne–Zeilinger (GHZ) state between the memory ions in the three nodes.

Conference Presentation

Citation Download Citation

George Toh, Jameson O'Reilly, Sagnik Saha, Mikhail Shalaev, Isabella Goetting, Tingguang Li, and Christopher Monroe "Progress towards a three-node ion-trap quantum network", Proc. SPIE 12446, Quantum Computing, Communication, and Simulation III, 124460P (8 March 2023); https://doi.org/10.1117/12.2657155

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