Ion trap with in-vacuum high numerical aperture imaging for a dual-species modular quantum computer

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 integr...

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Veröffentlicht in:Review of scientific instruments 2024-03, Vol.95 (3)
Hauptverfasser: Carter, Allison L., O’Reilly, Jameson, Toh, George, Saha, Sagnik, Shalaev, Mikhail, Goetting, Isabella, Monroe, Christopher
Format: Artikel
Sprache:eng
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Zusammenfassung: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(1)% of the 493 nm photons emitted from a 138Ba+ ion into single-mode fibers. We also demonstrate that proximal effects of the lenses on the ion position and motion can be mitigated.
ISSN:0034-6748
1089-7623
DOI:10.1063/5.0180732