$^{138}$Ba$^+$ and $^{171}$Yb$^+$ Dual Species Modular Quantum Network
POSTER
Abstract
Trapped ions are a leading platform for quantum computing, with long coherence times and high fidelity operations. To address the challenge of scaling such systems, we utilize a modular architecture consisting of separate traps with photonic links for remote entanglement. In our experiment, each of two traps contain a $^{171}\textrm{Yb}^+$ memory qubit and a $^{138}\textrm{Ba}^+$ communication qubit. We report progress in the development of this system, including improvements in light collection, higher purity of the single photons generated for remote entanglement, increased fidelity in our ion-photon entanglement, and the construction of the second module. The outlook toward a three trap system and entanglement protocols for that system are discussed.
*This work is supported by the ARO with funding from the IARPA LogiQ program, the AFOSR, the ARO MURI on Modular Quantum Circuits, the AFOSR MURI on Quantum Transduction, the AFOSR MURI on Interactive Quantum Computation and Communication Protocols, and the ARL Center for Distributed Quantum Information.