Related papers: Ion Trap with In-Vacuum High Numerical Aperture Imaging for a Dual-Species Modular Quantum Computer

Ion Trap with In-Vacuum High Numerical Aperture Imaging for a Dual-Species Modular Quantum Computer

URL: http://arxiv.org/abs/2310.07058v2
Date: Tue, 26 Mar 2024 21:46:44 GMT
Title: Ion Trap with In-Vacuum High Numerical Aperture Imaging for a Dual-Species Modular Quantum Computer
Authors: Allison L. Carter, Jameson O'Reilly, George Toh, Sagnik Saha, Mikhail Shalaev, Isabella Goetting, Christopher Monroe,
Abstract summary: Photonic interconnects between quantum systems will play a central role in both scalable quantum computing and quantum networking. We present an ion trap system that has the highest reported free-space photon collection efficiency for quantum networking.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Photonic interconnects between quantum systems will play a central role in both scalable quantum computing and quantum networking. Entanglement of remote qubits via photons has been demonstrated in many platforms; however, improving the rate of entanglement generation will be instrumental for integrating photonic links into modular quantum computers. We present an ion trap system that has the highest reported free-space photon collection efficiency for quantum networking. We use a pair of in-vacuum aspheric lenses, each with a numerical aperture of 0.8, to couple 10% of the 493 nm photons emitted from a $^{138}$Ba$^+$ ion into single-mode fibers. We also demonstrate that proximal effects of the lenses on the ion position and motion can be mitigated.

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